Computer Knowledge Zone (Think Different)

Concept of Object-Oriented Programming Concept

2023-04-25T00:21:00.004-07:00

Concept of Object-Oriented Programming Concept

Object Oriented Programming is performed by using class and object.
Class is a set of States and behaviors.
Class is also known as a blue print of an object.
Class is called an Object factory where more than one object is created.
The object is used for accessing all the functionality of Class.
An example of Class and Object is

CAR----> It is a class
Wagon R, Maruti 800, Alto, Seltos, etc are examples of objects.

Object-Oriented Principle:-

Encapsulation:- It is a process of binding the data and method in a single unit. A general example of encapsulation is Capsules, Bike, Cake, and others where the data is wrapped in a single unit. The Class is also an example of Encapsulation because Class also binds the state and behavior.

Abstraction: Abstraction is a process where only essential information is shown for use and unnecessary information about an object is hidden from the user. ATM is an example of Abstraction where users only access essential data. In programming the scope of data(Public, Private, Protected) helps to abstract the data from the user.

Polymorphism:- Polymorphism is made up of two words: Ploy--> Many and Morphism--> Forms. Polymorphism helps to use a single name function with multiple arguments. It helps the programmer to prevent learning the different names of functions.

Example: Shapes-->Circle,Rectangle, Ovel Programming Example:- Add(int,int) Add(int, double) Add(double,double) Add(double,int) Add(String, String)

Inheritance:- Inheritance allows to access the property of Base Class(Parent Class) to Sub Class(Child Class). With the help of Inheritance, the code is reusable and shared with an object. For Ex.:- The Property of a parent can be accessible by the child.

Windows RUN Shortcuts Command

2018-12-16T06:45:00.004-08:00

Windows RUN Shortcuts Command

-------------------------------------------------------------------------------------------

Control Panel Program Shortcuts

control Control Panel

control desktop Display Properties (Personalization)

control color Personalization - Color and Appearance

control folders Folders Properties

control keyboard Keyboard Properties

control mouse Mouse Properties

control netconnections Network Properties

control printers Printers Folders

control userpasswords Manager current User Account

control userpasswords2 Manager all User Accounts

control update Windows Update

control admintools Administrative Tools

control schedtasks Scheduled Tasks

appwiz.cpl Application Wizard (Program and Features)

powercfg.cpl Power Configuration

timedate.cpl Date and Time Properties

desk.cpl Display - Screen Resolution

intl.cpl Regional Settings (International)

mmsys.cpl Sound Properties (Multimedia System Settings)

inetcpl.cpl Internet Properties (Internet Control Panel)

wscui.cpl Security Center(Windows Security Center UI)

sysdm.cpl System Properties

utilman Ease of Access Utility Manager

firewall.cpl Windows Firewall

minus3. Commonly used Windows Tools

explorer Windows Explorer

regedit Registry Editor

services.msc Windows Services (local)

taskmgr Task Manager

msconfig System Configuration Utility

mstsc Remote Desktop (Microsoft Terminal Services Client)

logoff Log Off Windows (without confirmation!)

shutdown Shuts Down Windows (don't try unless you are ready to shutdown)

--------------------------------------------------

Microsoft System Configurations

--------------------------------------------------

devmgmt.msc Device Management

eventvwr.msc Event Viewer

compmgmt.msc Computer Management including System Tools, Storage,

Services and Appliations

diskmgmt.msc Disk Partition Manager

dcomcnfg Component Services (Detailed Component Configuration)

gpedit.msc Group Policy Editor

secpol.msc Local Security Policy Settings

lusrmgr.msc Local User and Groups

perfmon.msc Performance Monitor

fsmgmt.msc Shared Folders (File Sharing Management)

---------------------------------

Other Windows Tools

---------------------------------

shrpubw Create a shared folder Wizard

dxdiag Direct X Troubleshooter

cleanmgr Clean Manager - Disk Cleanup Utility

clipbrd Clipboard Viewer (not available after Windows XP)

msiexec Windows Installer Details

magnify Windows Magnifier

osk On Screen Keyboard

msinfo32 System Information

sndvol Volume Control

winver Windows Version ( shows your windows version )

comp Compare Files

ftp MS-Dos FTP

label Volume Serial Number for C:

fsquirt Bluetooth Transfer Wizard

verifier Driver Verifier Utility

migwiz Migration Wizard - Files and Settings Transfer Tool

sigverif File Signature Verification Tool

fonts Fonts

joy.cpl Game Controllers

mrt Malicious Software Removal Tool

eudcedit Private Characters Editor

WHAT IS METAL WHISKERS ??

2018-11-16T20:30:00.000-08:00

METAL WHISKERS

Metal whiskers are tiny hair-like growths that form on metals. When these electrically conductive whiskers appear on electronic assemblies, they can cause shorts or current leakage. The reason for their appearance is still hypothesized, but they are known to form mostly on pure tin or zinc finished surfaces. They can remain undetected, growing slowly out of your connectors until they destroy your cables and harnesses.
                                 Metal whiskers may vary in shape and size. Some emerge as straight while others may appear curved, forked, pyramidal, or grooved. Growth time can take anywhere from days to years, and can reach up to 10 mm.
                                                           Shorts and arcs are a symptom of metal whiskers. High Voltage, or Hipot, testing can detect metal whiskers and help you avoid serious problems in your products. To learn more about high voltage, check out Cirris’ article on Testing Cables with High Voltage.
   Due to METAL WHISKERS the electronic circuit can be break after some time and this is cause is perform after electric shock. NASA satellite also not damage after some long time duration because on metal the whiskers grow very fast and make circuit usefulness.

Learn Programming in UNIX

2018-09-09T06:44:00.000-07:00

Q: - Write a program to input two numbers and add them?

gedit add.sh

clear

echo “enter two numbers:”

read a

read b

sum=`expr$a+$b`

echo $sum

Syntax for if-else:-

(1) if test condition

then

---------

else

---------

(2) if[condition]

then

---------

else

---------

Q: - Write a program to input a numbers and check it is negative or not?

clear

echo “enter a numbers:”

read a

if[$a-ge 0]

then

echo “no. is positive”

else

echo “no. is negative”

Q: - Write a program to input a numbers and check it is even or odd?

clear

echo “enter a numbers:”

read a

r= `expr $a%2`

if test $r –eq 0

then

echo “no. is even”

else

echo “no. is odd”

Q: - Write a program to input two numbers and swap them?

clear

echo "enter the value of a :"

read a

echo "enter the value of b"

read b

t=$a

a=$b

b=$t

echo " value of a : $a"

echo " value of b: $b"

Q: - Write a program to input two numbers and find greatest number?

clear

echo "enter the value of a :"

read a

echo "enter the value of b"

read b

if test $a -gt $b

then

echo "largest value: $a"

else

echo "largest value: $b"

Q: - Write a program to input a numbers and check number is positive or not?

clear

echo "enter the value of a :"

read a

if test $a -ge 0

then

echo "no. positive"

else

echo "no. negative"

Syntax for ‘for’ loop:-

For((initial;sondition;increment/decrement))

--------------------------------

Done

Q: - Write a program to input a numbers and print the table of that number?

clear

echo "enter any no.:"

read a

for((i=1;i<=10;i++))

t=`expr $a \* $i`

echo " $a * $i " $t

done

Syntax for ‘while’ loop:-

While test condition

------------

Done

Q: - Write a program to input a numbers and print digit by digit?

clear

echo "enter any no.:"

read a

while test $a -gt 0

t=`expr $a % 10`

echo $t

a=`expr $a / 10`

done

Q: - Write a program to input a numbers and add every digit?

clear

echo "enter any no.:"

read a

while test $a -gt 0

t=`expr $a % 10`

s=`expr $s + $t`

a=`expr $a / 10`

done

echo "sum of every digit: $s"

Syntax for switch case:-

Case $variable name in

--------

;;

--------

;;

--------

;

Esac

Example for switch case:-

clear

echo "1)addition"

echo "2)substraction"

echo "3)division"

echo "4)multiplication"

echo "enter two number:"

read a

read b

echo "enter your choice:"

read ch

case $ch in

1) result=`expr $a + $b`;;

2) result=`expr $a - $b`;;

3) result=`expr $a / $b`;;

4) result=`expr $a \* $b`;;

*) echo "invalid choice"

esac

echo $result

Q: - Write a program to input a numbers and check no. is perfect or not?

clear

echo "enter a no:"

read a

sum=0

mid=`expr $a/2`

for((i=1;i<=$mid;i++))

r=`expr $a % $i`

if test $r -eq 0

then

sum=`expr $sum + $i`

done

if test $sum -eq $a

then

echo "no is perfect"

else

echo "not perfect"

Q: - Write a program to input a numbers and check no. is prime or not?

clear

echo "enter a no:"

read a

f=0

for((i=1;i<=$a;i++))

r=`expr $a % $i`

if test $r -eq 0

then

f=`expr $f + 1`

done

if test $f -eq 2

then

echo "no is prime"

else

echo "not prime"

Q: - Write a program to input a numbers and check no. is Armstrong or not?

clear

echo "enter a no:"

read a

sum=0

f=$a

while test $a -ne 0

r=`expr $a % 10`

a=`expr $a / 10`

sum=`expr $sum + $r \* $r \* $r`

done

if test $sum -eq $f

then

echo "no is armstrong"

else

echo "not armstrong"

Q: - Write a program to print n term Fibonacci series?

clear

echo "how many terms:"

read a

f=0

p=1

echo $f

echo $p

d=`expr $a - 2`

for((i=1;i<=d;i++))

next=`expr $f + $p`

f=$p

echo $next

p=$next

done

Q: - Write a program to input a number and find its factorial?

clear

echo "enter a no:"

read n

fact=1

for((i=$n;i>=1;i--))

fact=`expr $fact \* $i`

done

echo "factorial is = $fact"

Q: - Write a program to input a file name and display its contents?

clear

echo "enter file name:"

read s

cat $s

Q: - Write a program to input a file name and display its contents in reverse ordered?

clear

echo "enter file name:"

read s

rev $s

Q: - Write a program to input a file name and encrypt it in to a file name encrypt.txt?

clear

echo "enter file name:"

read fn

tr[a-z A-Z 0-9][d-z c-x 1-5]<$fn>encrypt.txt

cat $encrypt.txt

Q: - Write a program to input a string and find the length?

clear

echo "enter a string:"

read a

len=`echo $a|wc -c`

len=`expr $len - 1`

echo $len

Q: - Write a program to input two strings and concatenate them?

clear

echo "enter two strings:"

read a

read b

cat $a + $b > $c

echo $c

Command line argument

$# = Total number of argument

$1 = First argument

$2 = Second argument

$* = Total argument to print/show

Q: - Write a program to input a file name with CLA and display the content?

Clear

Cat $1

Q: - Write a program to print all the arguments?

Clear

Echo $*

CODD RULES of RDBMS

2018-09-09T06:41:00.000-07:00

Codd’s rules for RDBMS

(i) The information rule.

(ii) Guaranteed access of data

(iii) Systematic treatment of null value.

(iv) On line DB support.

(v) Comprehensive sup-language rule.

(vi) The view update rule.

(vii) Insert update rule.

(viii) Physical data independence.

(ix) Logical data independence.

(x) Integrity rule

(xi) DB distribution rule.

(xii) Non subversion rule.

The information rule:-All information in a relational database including table names, column names is presented by values in tables.

Guaranteed access of data:- Every piece of data in a relational database, can be accessed by using a combination of a tuple name, a primary key value that identifies the row and a column name, which identifies a cell.

Systematic treatment of null value:- It systematic treatment of null value.

On line DB support:- User car access the data online by simple query.

à If data is on internet then the data can be access able.

Comprehensive sup-language rule:-Easy language for accessing the database.

à For crate a table we can use create student(Name, ph.) table.

à For access a attribute we can use select name from student.

The view update rule:- The change must reflect permanently.

à Any view that can be updated theoretically can be updated using the RDBMS.

Insert update rule:- You can add new record in data base and you can delete the record and change the record.

à The RDBMS supports insertion, updating and deletion at a table level.

Physical data independence:- On changing the location of data it never affect.

àThe execution of ad hoc requests and application programs is not affected by changes in the physical data access and storage methods.

Logical data independence:- We can access any attribute randomly of similar attribute.

à Logical change in tables and views such as adding/deleting columns or changing field lengths need not necessitate modifications in the programmer or in the format of adhoc requests.

Integrity rule:- In data base when change the data forcefully the data can be change.

à There are two types of integrity rule:-

Entity integrity rule:- In any table, any primary key value never null, called integrity rule.

#s_id	name	add	dob	class
1 2 3 4 5	A S D V G	Q W E R T	12 14 16 17 13	12^th Bca Mca Pgdca Mba

#p_id	P_name	duration	S_id
P_1 P_2 P_3 P_4 P_5	C++ Vb Java Php html	2 5 6 8 9	1 2 3 4 5

Referential integrity rule:- Linking maintain by the referential that means referential rule use foreign key for linking to another table.

Database distribution rule:- If multiple users access the same data then same copy available for all.

Non subversion rule:- Only one user can perform modification on single database at a time that means multiple user can’t perform modification on processing time.

C++ NOTES

2018-08-19T22:41:00.000-07:00

flipdrive.com/file.mp3
Download file for ICSE CBSE 12 C++ NOTES

Activate All Setting of Windows 7 (GOD MODE)

2018-08-09T22:10:00.002-07:00

GOD MODE

For Activate all setting of WINDOWS 7 follow the steps.

1. Create a new Blank Folder.

2. Right click on folder and select rename.

3. Paste this code in folder name and hit enter.

GODMODE.{ED7BA470-8E54-465E-825C-99712043E01C}

Enjoy for accessing all the setting.

Memory Hierarchy ( For O-LEVEL/BCA/MCA Computer Fundamental Examination )

2018-08-09T22:01:00.001-07:00

Internal Processor Memory:-

→ The Internal Processor memory is also known as processor memory which is direct connected to the processor.
→ This memory help for manage the processing in computer.
→ There are two types of Internal Processor memory such as:

(a) Cache Memory
(b) CPU Memory.

(a) Cache Memory:-

→ Cache Memory is very fast and expensive memory.
→ Cache Memory work as bridge between Processor and RAM.
→ The Cache Memory is direct attach with micro - processor and RAM.
→ The Cache Memory used for increased the speed of data processing in computer.
→ The Cache Memory is also known as static memory where the data is forcly deleted.
→ The Cache Memory store all the data instruction which is ready for process.
→ The speed of Cache Memory is measured in NANO SEC.
→ There are two type of Cache Memory:

(a) L1 Cache
(b) L2 Cache.

→ In L1 Cache the small set of instructions are store and the size of L1 Cache is up to 256KB.
→ In L2 Cache memory is used for store the large data set instruction and the size of L2 Cache memory is up to 1024KB or 1MB.

(b) CPU:-

→ The CPU Register is direct connected to the processor.
→ This memory help for perform the execution on current data instruction.
→ The CPU register work on only one instruction at a time.

PRIMARY MEMORY

Primary Memory:-

→ The Primary Memory in computer is used for run the application in computer.
→ The Primary Memory is also known as main memory.
→ The Primary Memory is divided into two type:

(a) RAM (Random Access Memory)
(b) ROM (Read Only Memory).

→ The Primary Memory store temporary format of data and the running application in computer is manage by the PRIMARY MEMORY.

DESCRIPTION :-

S-RAM= Static RAM.

D-RAM= Dynamic RAM.

SD-RAM= Synchronous Dynamic RAM.

DDR-RAM= Double Data Rate RAM.

P-ROM= Programmable ROM.

EP-ROM= Erasable Programmable ROM.

EEP-ROM= Electrical Erasable Programmable ROM.

RAM (Random Access Memory):-

→ RAM is a memory which is work using power management.
→ The RAM is also known as volatile memory where the data is loss automatic when the power is off.
→ The RAM provide virtual memory for handle the task in computer.
→ In RAM the data is store in temporary format.
→ There are different type of memory are:

(a) S-RAM
(b) D-RAM.

S-RAM:-

→ In S-RAM the data is deleted after closing the computer and the data is automatics refresh on a particular time duration.
→ In D-RAM the OS files is loaded.

D-RAM:-

→ The D-RAM the OS files loaded.
→ The D-RAM is Dynamic RAM where the data is refresh automatic.
→ In this RAM the old information is automatic deleted when the new data is occurred.

SD-RAM:-

→ The SD-RAM is Synchronous Dynamic RAM that RAM is used to manage large data information in computer.
→ This RAM property is use for manage for running high volume and capacity of data in computer.

RD-RAM:-

→ This type of RAM is used in play station devices or gaming console graphics on data.
→ Provide high data transfer rate.

DDR-RAM:-

→ It is Double Data Rate RAM.
→ It creates the double virtual space for handling the large application's in computer.
→ In Laptop, Desktop, DDR-RAM is used.
→ It is divided into several categories.

(a)DDR - 1
(b)DDR - 2
(c)DDR - 3
(d)DDR - 4 (Latest)

ROM (Read Only Memory):-

→ ROM is a device that provide the service to access the data in computer.
→ In ROM chip the data cannot be updated.
→ There are different types of ROM:

P-ROM:-

→ It is Programmable ROM that use for reading the content in computer.

EP-ROM:-

→ It is Erasable Programmable ROM that allow to remove the data on manufacture time.

EEP-ROM:-

→ It is Electrical Erasable Programmable ROM that can update the data by removing old information or data from the ROM chip.

SECONDARY MEMORY

→ This memory is a permanent memory that used for store the large amount of information like: Audio, Videos, Graphics, and other.
→ This memory is also known as Non - Volatile memory because data have no effect when power is off.
→ Some Secondary Memory is hard disk CD, DVD, PD, Floppy Disk, and other.

UGC-NET Computer Science (RSA-Algorithm Solution)

2018-08-06T08:35:00.003-07:00

UGC-NET RSA-Algorithm Solution

Using RSA algorithm, what is the value of cipher text C, if the plain text M = 5 and p = 3, q = 11 & d = 7 ?

(A) 20

(B) 52

(C ) 26

(D )31

Solution:-

All the values are given i.e.

p=3,

q=11

then n=(p * q) = (3 * 11)=33

Find value of m=(p-1)*(q-1) = (2 * 10)=20

Find a small odd integer e, that is relatively prime to m.

If e=3, then GCD(3,20)=1. e should be small and prime and so we let e=3. Value of d is given, d=7.

Public key = (e,n).

To encrypt a message, we apply the public key to the function

E(m) = m^e(mod n)

then:-

=5³(mod 33)

= 125 (mod 33)

= 26

As a result, the encrypted message E(M) = 26.

It is the transmitting message.

Multiple Inheritance

2018-08-06T07:31:00.001-07:00

Multiple Inheritance

In multiple inheritance a class can access the property of more than one class. This inheritance is use for multiple accessing of properties. In multiple inheritance ambiguty is

occured when same name function is declare in both class and the object is confuse with function is called.

syntax −

class derived-class: access baseA, access baseB....

Where access is one of public, protected, or private and would be given for every base class and they will be separated by comma as shown above. Let us try the following

example −

#include <iostream.h>

#include <conio.h>

// Base Class

class Shape

{

public:

void getwidth(int w) {

width = w;

}

void getheight(int h) {

height = h;

}

protected:

int width;

int height;

};

// Base class Cost

class cost

{

public:

int getCost(int area) {

return area * 120;

}

};

// Derived class

class Rectangle: public Shape, public Cost

{

public:

int getArea()

{

int a=width * height;

return a;

}

};

void main()

{

Rectangle Rect;

int area;

Rect.getwidth(5);

Rect.getheight(7);

area = Rect.getArea();

cout << "Total area: " << Rect.getArea() << endl;

cout << "Total cost: Rs." << Rect.getCost(area) << endl;

getch();

}

Run it

Internet of Things (IOT)

2018-07-26T00:32:00.001-07:00

Internet of Things (IoT)

Today all the electronic devices are controlled by using programmed equipment. The internet allow to access all the data form several location. Thus if we want to access all the device on world wide location then we connect the devices to the internet.

Internet of Things is a concept of computer that allow to access the physical objects that connected to the internet and able to access themselves to other devices.

In this technology, sensor technology is use to sense the device and perform the specific operation. IOT help to make a intelligent machine.

The internet of things is a difficult concept to define precisely. In fact, there are many different groups that have defined the term, although its initial use has been attributed to Kevin Ashton, an expert on digital innovation.

Real World Applications of IoT

1. Smart Home

2. Car connect

3. Smart cities

4. Help in Agriculture

5. Smart Retail System

6. IoT in HealthCare

and Many more......

IoT like If you go your home after complete your job hours and start your car. When you start your car a message send to your internet connected AC and your AC automatically start to cool your room. ......

CALCULATING SUBNET MASKING

2018-07-26T00:11:00.001-07:00

Calculating Subnet Masking:-
----------------------------
1. Network Id / Subnet address

2. Subnet Mask

3 .Interface

So with the help of these we can figure out where to send a packet.

IP address 201.14.78.65 subset mask 255.255.255.224

IP address 11111111.11111111.11111111.11100000
Subnet Mask 11001001.00001110.01001110.01000001
Subnet address 11001001.00001110.01001110.01000000
201 . 14 . 78 . 64

Types of Computer (According to Operation)

2018-07-11T23:57:00.005-07:00

Computer Words Full Forms. For Preparation of ONE DAY EXAM (RO/ARO, DEO, BANK and OTHERS)

2018-05-18T03:39:00.000-07:00

COMPUTER RELATED FULL FORMS

*********************************

* AVI = Audio Video Interleave

* RTS = Real Time Streaming
* SIS = Symbian OS Installer File
* AMR = Adaptive Multi-Rate Codec
* JAD = Java Application Descriptor
* JAR = Java Archive
* JAD = Java Application Descriptor
* 3GPP = 3rd Generation Partnership Project
* 3GP = 3rd Generation Project
* MP3 = MPEG player lll
* MP4 = MPEG-4 video file
* AAC = Advanced Audio Coding
* GIF = Graphic Interchangeable Format
* JPEG = Joint Photographic Expert Group
* BMP = Bitmap
* SWF = Shock Wave Flash
* WMV = Windows Media Video
* WMA = Windows Media Audio
* WAV = Waveform Audio
* PNG = Portable Network Graphics
* DOC = Document (Microsoft Corporation)
* PDF = Portable Document Format
* M3G = Mobile 3D Graphics
* M4A = MPEG-4 Audio File
* NTH = Nokia Theme (series 40)
* THM = Themes (SonyEricsson)
* MMF = Synthetic Music Mobile Application File
* NRT = Nokia Ringtone
* XMF = Extensible Music File
* WBMP = Wireless Bitmap Image
* DVX = DivX Video
* HTML = Hyper Text Markup Language
* WML = Wireless Markup Language
* CD - Compact Disk.
* DVD - Digital Versatile Disk.
* CRT - Cathode Ray Tube.
* DAT - Digital Audio Tape.
* DOS - Disk Operating System.
* GUI - Graphical User Interface.
* HTTP - Hyper Text Transfer Protocol.
* IP - Internet Protocol.
* ISP - Internet Service Provider.
* TCP - Transmission Control Protocol.
* UPS - Uninterruptible Power Supply.
* URL - Uniform Resource Locator.
* USB - Universal Serial Bus.
* VIRUS - Vital Information Resource Under Seized.
* 3G - 3rd Generation.
* GSM - Global System for Mobile Communication.
* CDMA - Code Division Multiple Access.
* UMTS - Universal Mobile Telecommunication System.
* SIM - Subscriber Identity Module.
* HSDPA - High Speed Downlink Packet Access.
* EDGE - Enhanced Data Rate for
GSM [ Global System for Mobile Communication] Evolution.
* VHF - Very High Frequency.
* UHF - Ultra High Frequency.
* GPRS - General Packet Radio Service.
* WAP - Wireless Application Protocol.
* TCP - Transmission Control Protocol .
* ARPANET - Advanced Research Project Agency Network.
* IBM - Internation Business Machine Corporation.
* HP - Hewlett Packard.
* AM/FM - Amplitude/ FrequencyModulation.
* WLAN - Wireless Local Area Network

.MKV = Metroska Video

.SWF = Shockwave File

*.FLV = Flash Video File

Computer Trick #1

2018-05-16T08:55:00.000-07:00

Make Your Computer Speak

Whatever You Type

1.Open Notepad and copy and paste the following code into it

Dim message, sapi
message=InputBox("What do you want me to say?","Speak to Me")

Set sapi=CreateObject("sapi.spvoice")

sapi.Speak message

2.Now save the notepad file with the name speak.vbs at your desktop.

3.Now double click on speak.vbs type in the box whatever you want your computer to speak for you.

JAVA Programming

2018-05-12T01:31:00.000-07:00

JAVA

Introduction:

Java is a pure object oriented programming language. Java is developed by James Gosling(Computer Scientist) in 1991. Latest version of Java program files is JDK 10.0.1.

JDK:- It is Java Development Kit. It can be downloaded free from internet.

JVM:- Its JAVA VIRTUAL MACHINE. It is use for run the program of java. The JVM use byte code file for running the program.

BYTE CODE:- This file contains the byte code information. The byte code file is created after compilation of java source code.

Setting Global path of java:-

use environmental variable

1. Right click on my computer
2. Click on Advanced System Setting
3. Click on Environmental Variable.
4. Select path from the list. and click on edit button.
5. Select java Path From C:\ Drive LIke : C:\program Files\Java\jdk_\bin.
6. Type ; from end and paste the path. and ok.
--------------------------------------------------------------------

Variable:-
--------

datatype variable_name=value;

int a=45;
float x=4.6f;
double xy=4.777777777;
String name="AMIT";
String ab="a"; a is define as string type
char ch='a'; a is define as character type
boolean z=true/false; 1/0
-------------------------------------------------------------------
System.out.println("msg"+variable);
here + is use for concatenate the msg and value.
like:-

int a=34;
System.out.println("a="+a); output:- a=34
System.out.println(a); output :- 34
------------------------------------------------------------------

COMMENTS:-
single line:- //
multiline: /* ........ */

-------------------------------------------------------------------------
Input from the keyboard by using scanner class:-
-------------------------------------------------

1. use header file:- import java.util.*;

2. object of scanner class

Scanner sc=new Scanner(System.in);
class_name constructor
here sc is an object.

3. input of value
integer value:-
sc.nextInt();
int a=sc.nextInt();

float value
float b=sc.nextFloat();

Double value
double c=sc.nextDouble();

Long value
long d=sc.nextLong();

String value
String s1=sc.nextLine();

Character value
char ch=sc.next().charAt(0);
------------------------------------------------------
Condition:-
1.if

2.if..else

3.ledder

4.Nested

5.Ternary operation

False<-------If cndition------->True
|
|
|
|
Else
------------------------------------------------
Operaters:- (x=3, y=2|a=2 , b=3)
> Greater a>b=false
< Less a<b=true
>= Greater or equel x>=y=true
<= Less or equel x<=y=true
= Equel a==b=true
!= Not equel a!=b=true

1. if

if(Condition)
{
.......
....... true
.......
}

When Condition is false then if provide No result

if(Condition)---->True
|
|
|
Execute

2.If..else

If(Condition)
{
........
........ True
........
}
else
{
........
False ........
........
}

False-------(Condition)--------True
| |
| |
| |
Exe False Exe True
----------------------------------------------------------------------lader if:-
-----------
it is use for check multiple condition in steps.
it is use in range program.
syn:-
if(condition)
{
-----
-----
}
else if(condition)
{
----
----
}
else if(condition)
{
-----
-----
}
.
.
.
else
{
-----
-----
}
---------------------------------------------------------------------
type casting of data:-
---------------------
it means to change the data in to another type.
variable=(datatype)value;
always typecasting is perform when the data is converted into small to large datatype.
like int to long
like float to double
like int to float
like :-
int x=4;
int y=x/3; hear y contain a float value then it give an error so use type casting for converting the decimal (float) value in to integer.
example:-
int y=(int)x/3;
then and is converted into integer value
-----------------------------------------------------------------------
working with multiple condition:-
-----------------------------------
logical operator:-
---------------
it is use for check the range of program value.
there are three types of logical operator.
1. AND && use when check all condition is true
2. OR || use when atleast one condition is true.
3. NOT ! when condition is true then result is false.
---------------------------------------------------------------------
nested if:-
-----------
if within if
if first condition is true then check second condition
syn:-
----
if(condition)
{
if()
{
----
----
}
else
{
----
----
}
}
else
{
if()
{
}
else
{
}
}
-----------------------------------------------------------------
choice based programming:-
-------------------------
menu driven programming

print menu 1
print menu 2
print menu 3
.
.
.
.
input choice
switch(choice)
{
case 1:
------------
-----------
-----------
break;
case 2:
------------
-----------
-----------
break;

case 3:
------------
-----------
-----------
break;

case 4:
------------
-----------
-----------
break;

.
.
.
default:
when case are not in the list then default is executed.
break;
}
break:- this keyword is use for exit from the case statement.
if break is not use in case then all case are executed till break
<------------------------------------------------------------------------<------------------------------------------------------------------------<----------------------------------------------------------------------->
looping Statement:-
--------------------
looping is use for execute the repeated type of statement .
component of loop:-
------------------
1. initialization start
2. condition stop
3. increment/decrement. step
++ --
type of loop:-
------------------
1. FOR
2. WHILE
3. Do-WHILE
3. NESTED
-------------------------------------------------------------------
1. FOR Loop:-
---------------
syn:-
(1) (2) (4)
for(initialization;condition;increment/decrement)
{
--------------------
(3) --------------------
--------------------
}
-----------------
example:-
print your name upto 10 times.

for(i=1;i<=10;i++)
{
S.o.pln("ROBIN");
}
initialization:-i=1 or i=10
condition:- i<=10 or i>=1
increment:- i++ or i--
i=i+1 or i=i-1
i+=1 or i-=1
--------------------------------------------------
while loop:-
----------
initalization;
while(condition)
{
-------------
-------------
-------------
increment/decrement;
}

wap to print 10 times hello;

int i=1;
while(i<=10)
{
print("hello");
i++;
}
----------------------------------
Input using InputStreamReader class
--------------------------------------
1. import java.io.*; -> io is input and output
2. create an object

InputStreamReader isr=new InputStreamReader(System.in);
BufferedReader br=new BufferedReader(isr);
remember :- Object of buffer reader is used for taking the input from the user.
3. input:-
variable=TypeCast(br.readLine());
typecast is use to convert the string value in to integer,float and double.
but for string value then no need to use typecasting.
readLine()-> it is a method to use for taking the input from the user.
------------
For integer value:-
int variable=Integer.parseInt(br.readLine());
For float value:-
float variable=Float.parseFloat(br.readLine());
For double value:-
double variable=Double.parseDouble(br.readLine());
for string value:-
String variable=br.readLine();
for character value:-
char variable=br.read();
always use Exception Handling in java program when use INPUTSTREMREADER class.
throws IOException
------------------
it is use with main() method line.
ex:-
public static void main(String as[])throws IOException

It is use because java is pure secure language and it catch all the input output error. like mouse and keyboard error.
-------------------------------------------------------
example of InputStreamReader class for taking the input and print them
-------------------------------------------------------------------
import java.io.*;
class TestISR
{
public static void main(String as[])throws IOException
{
InputStreamReader isr=new InputStreamReader(System.in);
BufferedReader br=new BufferedReader(isr);

int a;
System.out.println("enter two number ");
a=Integer.parseInt(br.readLine());
int b=Integer.parseInt(br.readLine());
int c=a+b;
System.out.println("sum= " +c);

}
}
-------------------------------------------------------------------
function:-
--------------
Function is the collection of statement .
function is divide in to two type:-
1. Predefine Function
2. user define function:-
------------------------------------
Predefine Function is also known as library function. It is already define in java.
There are different types of predefine function, LIke:-
1. Math function
2. String Function
------------------------------------------------------
Math Function:--
---------------
Math function returns double value.
Math Function is used with Math keyword as prefix.
There are different types of Math Function:-
-------------------------------------------
double variable=Math.function(value);

Like:-
----
1. pow() :- finds power of base value
2. sqrt() : - find square root of value
3. max() :- find maximum between two value
4. min() :- find minimum between two value
5. rint() :- find roundoff value
6. ceil() :- find next integer value
7. floor() :- find previous integer value
9. abs() :- find absolute value
9. random() :- find randome value
10. log() :- find logrithm value
11. exp() :- find exponential value
12. sin() :- find sin value
13. cos() :- find cos value
14. tan() :- find tan value
15. asin() :- find inverse sin value
16. acos() :- find inverse cos value
17. atan() :- find inverse tan value
----------------------------------------------------------------
String function:-
----------------
String function works with string value.
it is use for handling the string value operation
String function is start with string value and seperate with dot operator.
ex:-
String str="hello";
variable=String_value.function(value);
---------------------------------------------------
1. lenght() :- find the length of sting
2. charAt() :- find charater at particular index
3. substring() :- extract the string within string
4. toUpperCase() :- convert string in upper case
5. toLowerCase() :- convert string in lower case
6. equals():- check equality of string in upper or lower case
7. equalsIgnoreCase() :- check equality of sting by ignore case
8. startsWith() :- check string start with particular word or not.
9. endsWith() :- check string ends with particular word or not.
10. indexOf():- find the index of charater in string
11. lastIndexOf() :- find the last index ofcharacter in string
13. replace() :- replace the character with another character.
14. concat() :- combine two or more string
15. valueOf() :- convert integer/float/double value in to string value.
----------------------------------------------------------------------
user define Function:-
------------------

user define function is define by the user.

Decleration Of user define Function-
-----------------------------------
syntax:-
------
[access Specifire][modifier][return type]function_name(parameter,...)
{
-----------------
-----------------
-----------------
body of function
-----------------
-----------------
return(value/variable); -> used when function define as return type
}
----------------------------------------------------------------------
access specifier:- public/private/protected
modifier:- static/final
return type :- void/int/float/char/double
void return type is used when function is define as no return type
function_name :- add()
parameter :- its a value that pass when function is called
---------------------------------------------------------------------
Function is called by the help of object:-
-----------------------------------------
like:-
object_name.function_name();
ex:-
object create:-
-------------
class_name object_name=new class_name();
like:-
if class name is Test then
Test ob1=new Test();
ob1.function_name();
like:-
ob1.display();
---------------------------------------------------------------------
like:-
----
define a function display();

public void display()
{
System.out.println("This is a display function");
}
----------------------------------------------------------------

Steps of installing Windows XP

2018-05-12T01:06:00.000-07:00

How to install windows 7

Step 1 - Start your PC and place your Windows 7 CD in your CD/DVD-ROM drive.

Note:- You can also use make a bootable pendrive with copied windows 7 files. and set first Booting priority as pendrive.

Restart your pc and following the steps.

Your PC should automatically detect the CD and you will get a message saying "Press any key to boot from CD".

Step 2 - At this stage it will ask you to press F6 if you want to install a third party Raid or SCSI driver. If you are using a an IDE Hard Drive then you do not need to press F6. If you are using a SCSI or SATA Hard drive then you must press F6 otherwise Windows will not detect your Hard Drive during the installation. Please make sure you have the Raid drivers on a floppy disk. Normally the drivers are supplied on a CD which you can copy to a floppy disk ready to be installed. If you are not sure how to do this then please read your motherboard manuals for more information.

Step 3 - Press S to Specify that you want to install additional device.

Step 4 - You will be asked to insert the floppy disk with the Raid or SCSI drivers. Press enter after you have inserted the disk.

Step 5 - You will see a list of Raid drivers for your HDD. Select the correct driver for your device and press enter.

Step 6 - You will then get a Windows XP Professional Setup screen. You have the option to do a new Windows install, Repair previous install or quit. Since we are doing a new install we just press Enter to continue.

Step 7 - You will be presented with the End User Licensing Agreement. Press F8 to accept and continue.

Step 8 - Precess C for create partition. Eg. However for this demonstration I will create two partition. The first partition will be 6000MB (C: drive) and second partition would be 2180MB (E: drive).

Step 9- Select the drive for installing the windows and press enter.

Step 10 - Choose format the partition using NTFS file system.Windows will now start formatting drive C: and start copying setup files.

Step 11 - After the setup has completed copying the files the computer will restart.

Step 12- In few seconds setup will continue. Windows 7 Setup wizard will guide you through the setup process of gathering information about your computer.

Choose your region and language.

Step 13 - Type in your name and organization.

Step 14- Enter your product key.

Step 15 - Name the computer, and enter an Administrator password. Don't forget to write down your Administrator password.

Step 16 - Enter the correct date, time and choose your time zone.

Step 17 - Finally Windows will start and present you with a Welcome screen. Click next to continue.

Step 18 - Add users that will sign on to this computer and click next.

Object tag in html

2018-05-09T00:09:00.000-07:00

https://amzn.to/2I3jNgM

Check how to use object tag in html

click here for know the --> Use of Object Tag In html.

Easy way to assemble a CPU

2018-05-09T00:00:00.003-07:00

Easy way to assemble a CPU

Click here to know Easy way to assemble a CPU in low cost

C Language Notes for new Students

2018-05-04T00:50:00.004-07:00

C- LANGUAGE NOTES

-----------------------------------------------------------------------------

Dennis Ritchie

1. C language is generally develop for hardware programming

2. C language is developed by Dennis Ritchie.

3. C language is developing in 1969-1974.

4. C language is develop in AT & T Bell Laboratory

Programming Language:-

Programming Language provide interface for write the program for development of Software.

There are different types of programming language.

a) Low Level:-

I) Machine Language: - It is in the form of Binary Numbers (0 or 1)

ii) Assembly Language: - It is in the form of group of alphabets and numbers.

b) High Level:-

--> It is user understandable language.

--> Program’s are written by the help of Alphabet number and symbols.

--> Programming is very easy in High Level Language.

--> Translator's are used for translate the program in machine level.

c) 4th Generation & 5th Generation:-

--> It is next generation language

--> It is use in Artificial Intelligence

Translator:-

Translator is use to convert the program in high level to machine

understandable format.

There are different types of translator:-

1. Compiler:-

--> It can compile the program at a time.

--> Error removing and debugging is slow.

--> Fast execution.

2. Interpreter

--> It can interpret the program line by line.

--> Error removing and debugging is fast.

--> Slow Execution.

Programming Elements:-

For creating a program different types of elements are used.

Like:-

a) Variable & Constant:-

1. Variable is use to hold the value in program.

2. Variable is a name of memory location where value is store.
3. Variable values can be change during program execution.

4. Constants are not change when the program in run.

Like:-

x=3; here x is a variable and 3 is a value/Constant.

Rules for declaration of a variable:-

1. Variable first character must be started with an alphabet or underscore also.

2. Variable name cannot accept any space.

3. Don't use any special symbol for variable name. Only use underscore symbol

4. Keywords are not use as name of variable.

5. Variable cannot define as more than one time.

Like:-

x, ab123, DOB, gender, _a.

Wrong variable name: - 1a, D O B, int

Data Types:-

Data Types is used in program to identify the value of a variable. There are different types of data types.

Data Type Format Specifier

1. Int %d

2. char %c

3. float %f

4. double %lf

5. long int %ld

6. long float %lf

Header Files:-

Header files store the definition of the predefine function of c language.

Extension of header file is .h

There are different types of header files.

a) stdio.h

b) conio.h

c) process.h

d) math.h

e) stdlib.h

f) string.h

g) iostream.h

etc...

Note:-

a) All header files are store in include name directory.

b) Header files are always written before main () method using # symbol.

c) # is pre-processor directives that can load header files into compiler.

Function:-

Function is the group of statement. Function provide modular programming approach.

There are different types of function

a) Pre Define Function

b) User Define function

User define function is define by the user according to the need.

Pre-Define Function:-

Pre-define function is also known as library function.

There are different types of function.

Like :- printf(), scanf(), clrscr() etc...

Structure of c program:-

#include<headerFile.h>

void main()

{

Variable Declaration;

Statement of code;

------------------------------ ;

}

Note:-

{ , } is curly brackets which is use for scope or body block declaration.

main() -> It is user define function. Programs are always start from main() block.

void :- it ignore the warning i.e. FUNCTION SHOULD RETURN A VALUE

Variable Declaration: - All the variable is define in this section.

Statements of Code:- Hear start the user line of program codes.

C language Software:-

Turbo C
Turbo C++
Borland C
Dev C
Visual C++

Open c language software for programming:-

STEPS FOR TURBO C++ FOR WINDOWS 7,8

1. Click Start Menu.

2. Select All Programs.

3. Click Turbo C++ for Windows 7

Double Click on Turbo C++ Windows 7 icon.

1. A window is open. This window is called Editor Window or Code Window

2. Click File menu and select New option

3. Type your code.

4. Save your Program with a name and extension is .c

Like:- Prog1.c (here Prog 1 is file name and .c is extension)

5. Click on Compile Menu and select compile(ALT+F9) option.

6. Click on Run Menu and select Run (CTRL + F9) option.

Important Shortcut for c programming:-

1. OPEN -> F3

2. SAVE -> F2

3. COMPILE -> ALT + F9

4. RUN -> CTRL + F9

5. OUTPUT -> ALT + F5

6. LINE BY LINE CHECK -> F7

7. COPY -> CTRL + INSERT

8. CUT -> SHIFT + DEL

9. PASTE -> SHIFT + INSERT

10. UNDO -> ALT + BACKSPACE

11. REDO -> ALT + SHIFT + BACKSPACE

12. MAXIMIZE DOCUMENT -> F5

13. MAKE EXE -> F9

14. MAXIMIZE/ MINIMIZE PROGRAM -> ALT + ENTER

15. CLOSE -> ALT + F3

16. EXIT -> ALT + X

Output Function:-

printf(“Message”);

printf is a function which is use to print the message on the screen.
Syntax:- printf(“Message of Format Specifier”,variable_list);

example:-

printf(“Hello”);

printf(“sum=%d”,a);

Here %d is use for printing the value of a that initialized as int type.

SIMPLE PROGRAM:-

Que 1:- Write a program to print your name .

Ans- 1:-

#include<stdio.h>

void main()

{

clrscr();

printf(“Congratulation!! ”);

printf(“HELLO Programmer ! This is my first Programming “);

getch();

}

Some useful function :-

clrscr() -> It is use to clear the output screen.

getch() -> it is use to stop the output screen.

Escape Sequence Character:-

\n -> for new line

\t -> for tab space ( 5 character)

\b -> for move the cursor at back to single character

\r -> Move cursor at first character of line

\a -> for beep ( sound)

Example:-

printf(“\n HELLO “);

printf(“WELCOME\t C programming”);

output:-

welcome c programming

printf(“NeuTron\bN”);

output:-

NeuTroN ( last character n is replace with N)
Input Function

scanf() function is use to take input from the keyboard.

Syntax:- scanf(“Format Specifier......”,&variable List...);

& -> It is ampercent sing and also known as address operator that specify the address of any variable.

Format Specifier:- It provide the identification of variable value.

Example:-

For Integer value:-

int a;

scanf(“%d”,&a);

For Integer value:-

float x;

scanf(“%f”,&x);

For Integer value:-

char z;

scanf(“%c”,&z);

Note:- If & operator is not use in scanf() with variable the the input value can not store in the variable.

Like :- scanf(“%d”,a); -> here &a is required for storing value.

Comma (,) delimiter is use for define multiple value or variable.

Like:-

Int a,b,c;

scanf(“%d%d%d”,&a,&b,&c);

Note:- Remember sequence of variable must be important. (Left to Right)

Some Special Types of Input using scanf()

scanf(“%d/%d/%d”,&dd,&mm,&yyyy); input format:- 12/09/1995

Conditional Statements:-

The conditional statements is use to check the condition and implementation logic in program to solve a problem.

There are different types of conditional statements

a) if

b) if....else

c) ladder if

d) nested if

e) ternary operator

In conditional statements, some operators are use for check the condition.

Like:-

Relational or comparison operator:

a) > (greater than)

b) < (less than)

c) >= (greater or equal to)

d) <= (less or equal to)

e) == (equal to)

f) != (not equal to)

Logical Operator:

a) && (AND)

b) || (OR)

c) ! (NOT)

NOTE :-

Logical operator is use when multiple condition are checked.

AND (&&)
CONDITION-1	CONDITION-2	RESULTS
TRUE	TRUE	TRUE
TRUE	FALSE	FALSE
FALSE	TRUE	FALSE
FALSE	FALSE	FALSE

OR(\|\|)
CONDITION-1	CONDITION-2	RESULTS
TRUE	TRUE	TRUE
FALSE	TRUE	TRUE
TRUE	FALSE	TRUE
FALSE	FALSE	FALSE

NOT(!)
CONDITION	RESULT
TRUE	FALSE
FALSE	TRUE

CONDITIONAL STATEMENT:

1 . If

SYNTAX:-

If condition is

True then

execute

if block

if(Check condition)

{

-------------- Statements..

--------------

}

2 . If.. else

SYNTAX:-

if(Check condition)

{

-------------- Statements..

--------------

}

else

{

-------------- Statements..

--------------

}

Remember in else, there is no need to define any condition.

3. Ladder if( if .. else if...) :- This is used when multiple condition is executed.

SYNTAX:-

if(Check condition)

{

-------------- Statements..

--------------

}

else if(Check condition)

{

-------------- Statements..

--------------

}

else if(Check condition)

{

-------------- Statements..

--------------

}

. More than one else if

else

{

-------------- Statements..

--------------

}

Note:- Remember always define else at the last because when any condition is not TRUE then else is executed.

4. Nested if :- It is use when multiple level of condition’s are checked.

SYNTAX

if(Check condition)

{

if(Check condition)

{

-------------- Statements..

}

else

{

-------------- Statements..

}

else

{

if(Check condition)

{

-------------- Statements..

}

else

{

-------------- Statements..

}

5. Ternary Operator:- Using ternary operator the condition is checked without using any if and else statements.

SYNTAX:-

Result_Variable=(check Condition)?True Statements: False Statements;

Like:-

Int a=2,b=3;

int res=(a>b)?a:b;

Result is 3 because condition is false then res store value of b.

ICT Resources Notes

2018-05-03T01:02:00.001-07:00

ICT Resources Notes

Click here for download

1. ICT Resource Set-1

2. ICT Question Paper Set-2

Network Administration:-
Windows NT: Its Windows New Technology. Its a network operating system that provide the feature of data sharing, communication, resource sharing and other services. Its a multi user and multi tasking operating system. Windows NT is available in to two version:
1. Windows NT Server
2. Windows NT Workstation
The Windows NT Server is used for design the server and Windows NT Workstation is use for Clients computers. It provide the GUI looks for working. It provide strict security.
Window NT support following protocol
1. RIP:- Routing Information Protocol
2. OSPF :- Open Shortest Path First
---------------------------------------------------------------------------------------------------------
In Windows NT use workgroup for store the setup records.

In Windoes NT two types of accounts is created.
1. Administrator :- It provide the full access priviliges.
2. Guest:- Limited access priviliges
--------------------------------------------------------------------------------------------------------

Files sharing in Windows NT:- File sharing is use for share the files on the network. Sharing is allowing access of files to others on the networks. There are different types of sharing:-
1. Full Control
2. Permission for read
3. Read:- user can view the contents of the share, read files and run program

Some tools of Windows NT.
1. NetBios:- It is a program that communicate within local network using different computer.
2. NETBEUI :- Advance version of netBios that control unlocated computer communication.
3. KERBEROS:- it a protocol that allow to communicate jthe computer over non secure protocol.
4. NSLOOKUP:- It is use for troubleshoot the DNS problems. Like Resolution of host address
5. NTLDR:- It is an importent file in computer because it handle the booting files in computer.

NTLDR File Missing Causes

1. Computer is booting form non bootavle access.
2. NTLDR related files is missing.
3. The bootable volume has its active partition set incorrectly.
4. Wrong boot sector code is installed
5. To many files in boot sector.

C Language Question Practice

2018-04-26T01:16:00.001-07:00

C Language Question Practice

Note: Do all the program using for, while and dowhile loop.

Que-1 Write a program to input a number and check number is perfect or not.

Que-2 Write a program to input a number and check number is Armstrong number or not.

Que-3 Write a program to input a number and check number is prime number or not.

Que-4 Write a program to input a number and check number is special number or not.

Que-5 Write a program to input a number and check number is palindrome or not.

Que-6 Write a program to input a number print it reverse order.

Que-7 Write a program to input a number and print it word format.

Que-8 Write a program to input a number and check it is Automarphic or not.

Que-9 Write a program to input a number and check number is magic number or not.

Que-10 Write a program to input a number print its factorial.

Que-12 Write a program to print Fibonacci series upto n term.

Que-13 Write a program to print tribonacci series upto n term

Que-14 Write a program to input a number and check number is perfect or not.

Que-15 Write a program to print following pattern.

a) 1

333

4444

55555

b) 55555

4444

333

c) 1

333

4444

55555

d) 1

2 3

4 5 6

7 8 9 10

How to write a data in CD/DVD

2018-04-25T22:46:00.001-07:00

Steps for Burning data in CD/DVD

1. 1. Open Nero Application from start menu.

2 2. Select data option and click on make data cd.

3 3. Add files wizard is open. For selecting the file click on add button.

                4.       Browse your file form the hard disk.(You can select multiple file using ctrl
                          button)

               5.       Click next. Select Multisession option for further use for disk space for
                          writing another data.

6. 6. Click on burn Button.

Remember:- During burning disk operation, don’t open the cd tray or closed the application.

Things you know before buying Laptop

2018-04-21T10:10:00.002-07:00

Things you should know before purchasing Laptop

1. Brand of Company Like DELL (inspiron Only), HP, ACER

2. Required RAM capacity Like 4 GB aprox.

3. Requirement of Hard Disk like 500 GB or 1 TB.

4. Processor like Intel Core i3 or Dual Core or AMD processor

5. Multimedia keyboard

6. Optical Mouse

7. ATI graphics Card

Note:- If you think to buy a laptop you can select the laptop without operating system or open source operating system because if you buy windows o/s for laptop then it increased price aproxx 3000 if you select DOS laptop then its reduced the windows cost.

Click here for example --> Best Laptop for students

2018-04-19T10:08:00.002-07:00

google-site-verification: googledc2de0ffc0ba7b50.html

Computer Knowledge Zone (Think Different)

Concept of Object-Oriented Programming Concept

Windows RUN Shortcuts Command

Windows RUN Shortcuts Command

WHAT IS METAL WHISKERS ??

Learn Programming in UNIX

CODD RULES of RDBMS

C++ NOTES

Activate All Setting of Windows 7 (GOD MODE)

Memory Hierarchy ( For O-LEVEL/BCA/MCA Computer Fundamental Examination )

UGC-NET Computer Science (RSA-Algorithm Solution)

UGC-NET RSA-Algorithm Solution

Multiple Inheritance

Internet of Things (IOT)

Internet of Things (IoT)

Today all the electronic devices are controlled by using programmed equipment. The internet allow to access all the data form several location. Thus if we want to access all the device on world wide location then we connect the devices to the internet.

Internet of Things is a concept of computer that allow to access the physical objects that connected to the internet and able to access themselves to other devices.

In this technology, sensor technology is use to sense the device and perform the specific operation. IOT help to make a intelligent machine.

The internet of things is a difficult concept to define precisely. In fact, there are many different groups that have defined the term, although its initial use has been attributed to Kevin Ashton, an expert on digital innovation.

Real World Applications of IoT

1. Smart Home

2. Car connect

3. Smart cities

4. Help in Agriculture

5. Smart Retail System

6. IoT in HealthCare

and Many more......

IoT like If you go your home after complete your job hours and start your car. When you start your car a message send to your internet connected AC and your AC automatically start to cool your room. ......

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Computer Trick #1

Make Your Computer Speak

Whatever You Type

1.Open Notepad and copy and paste the following code into itDim message, sapimessage=InputBox("What do you want me to say?","Speak to Me")

Set sapi=CreateObject("sapi.spvoice") sapi.Speak message 2.Now save the notepad file with the name speak.vbs at your desktop. 3.Now double click on speak.vbs type in the box whatever you want your computer to speak for you.

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1.Open Notepad and copy and paste the following code into it

Dim message, sapi
message=InputBox("What do you want me to say?","Speak to Me")

Set sapi=CreateObject("sapi.spvoice")

sapi.Speak message

2.Now save the notepad file with the name speak.vbs at your desktop.

3.Now double click on speak.vbs type in the box whatever you want your computer to speak for you.