Computer Knowledge

How to install Window 7 using USB drive ?

noreply@blogger.com (Unknown) — Wed, 27 Feb 2013 23:39:00 +0000

"It's time to be smart with smart windows"

Installing windows 7 using USB drive

What are basic requirements ?
-----Windows 7 DVD
-----And a USB drive having minimum capacity of 4GB.

What are advantages if we install window 7 using flash drive ?

----First overall speed of the installation willl increase significantly.
----Carrying USB is more easy and convienient than DVD.
----It also become possible to install windows 7 on that systems which are not having DVD drives such as Net book..

Steps of installing windows 7 using USB drive.
---- Insert USB
---- Run the command prompt as administrator. (Type cmd in start and right click on cmd and click on "run as administrator".)
----In the command prompt type the following command

-DISKPART

A new window will appear and execute the following commands in that new window.

-LIST DISK

-SELECT DISK 1

-CLEAN

-CREATE PARTITION PRIMARY

-SELECT PARTITION 1

-ACTIVE

-FORMAT FS=NTFS

(This process may take few seconds)

-ASSIGN

-EXIT

Do not close the command prompt. Minimize it.

----Insert window 7 DVD .

----Maximize cmd and execute the following commands

- N: CD BOOT (hit enter Here "N" is my DVD drive letter write your one's here)

- CD BOOT

- BOOTSECT.EXE/NT60 O: (Here "O" is my USB drive letter)

After entering the command this messages appear

Your USB device is ready for the boot. Now copy the content of DVD to the USB.

The thing you left to do is to enabling the USB boot options in the BIOS from CD-ROM or HDD.

Enjoy installing windows from USB . If any problem leave it in the comment section.

Credit to: http://computertechtrick.blogspot.com

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How to change folder icons?

noreply@blogger.com (Unknown) — Tue, 26 Feb 2013 23:32:00 +0000

Change icons of folders this new year.

Steps :-

-Right click on the folder.
-Then click on the properties.
-Then click on customize tab.

-Click on 'Change icon...'

-We can select any from the list or if we are having more icons then click on browse and locate them.

-After selecting icons click OK.

Credit to: http://computertechtrick.blogspot.com

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How to Edit PDF Files using Free Offline & Online Tools

noreply@blogger.com (Unknown) — Mon, 25 Feb 2013 23:26:00 +0000

PDF, or the Portable Document Format is one of the most popular format for document sharing. Its popularity is mainly because PDF files are multi-platform (can be run on most devices without any change in formatting), smaller in size, can be opened on most devices with free software and are difficult to edit as they are "read only".

Despite PDF files being "read only" by default, there are certain tools and software you can use to change the contents of a PDF file for free without resorting to paid software like Adobe Acrobat.

Free Tools To Edit PDF files

Edit PDF Files Online
If you are looking for basic PDF editing (changing bits of text to hide your personal information, filling a form etc.), you can try PDFEscape to edit PDF files right in your browser. It allows you to modify text, images and add annotations with the help of custom shapes and arrows. One of PDF Escape's great feature is its ability to password protect PDF files. It also allows you to hide text with its white out tool (this is different from deleting it). It even lets you edit password protected PDF files and add hyperlinks to web addresses. To use PDF Escape, all you need is a JavaScript enabled web browser.

2 step PDF Editing
This basically involves converting PDF files into another format and then editing the converted PDF file. After editing, you can use a PDF writer to reconvert the edited file back to PDF.

If your PDF file can be suitably edited as a Word document, you can use the converter from BCL Research for instant conversion. Edit the converted file and then, you can use any free PDF writer like PDF Creator to recreate a PDF file. If you have Open Office, you can use its export as PDF feature to create a PDF file from almost any printable document.

Multivalent Browser: Multivalent browser offers minimal PDF editing in the form of allowing to add annotations. It also contains several command line tools which allow for merging and compressing PDF files.

Edit Meta data of PDF files
Meta Data is the information that is associated with a PDF file. If you wish to change this information, you can use the free PDFMetaEdit to edit information like title, author name, bookmarks and other creation data of a PDF document. PDFMetaEdit can also be used to remove and add passwords (encrypt) to PDF files. A-PDF Info Changer is also a similar product which allows you to change Author name, Title, Subject and Keywords of a PDF file.

Advanced PDF Editors (editing text, images etc.)

The freeware tools mentioned above will be useful for most users with basic PDF editing requirements. However, if you have advanced PDF editing needs, the above tools will not be that useful. There are some advanced PDF editing tools available that are as good as most paid products.

Inkscape: Inkscape is a vector graphics editor that allows you import and export PDF files. You can use Inkscape to select text, image or any other object on a PDF file and then change its position or even delete it. It also lets you do free hand drawing on PDF files and add annotations. While Inkscape does offer some really good features, its complex interface makes it difficult for users to use it. Moreover, it only allows you to edit only a single page at a time. You can, however, convert these to a single PDF file using a PDF combiner.

PDFTools: PDFTools is a PDF management application that allows you to encrypt, decrypt (remove password), join and split PDF files. Its Stamp feature allows you to add text and images over a PDF file. You can stamp to the location of your choice using the X and Y co-ordinates. It also includes a PDF creator which allows you to create PDF files from any XML document. It also allows you to re-arrange pages in a PDF file.

GIMP: GIMP or the GNU Image Manipulation Program can also be used as a PDF editor. Just import any PDF file as an image or a layer, then edit it, and then use its export function to get a PDF file. The only downside is that like Inkscape, GIMP also allows you to edit only a single page at a time. You can, however, easily combine these to get a single PDF file using free software like the above mentioned PDFTools.

PDF-XChange Viewer: The free version of PDF-XChange viewer can be used to type text directly on PDF files. This makes this software a good PDF form filler. Its image stamp feature can be used to insert images directly on any PDF document.

PDFEdit: PDFEdit is a full fledged PDF editor for Unix-Like operating systems. It's downside is that it does not support editing protected or encrypted PDF files. PDFEdit has a beta version for Windows, but it didn't work for me.

Open Office Draw

The open source alternative to Microsoft Office can also be used as an alternative to Adobe Acrobat. All you need is the PDF Import extension. Then you can use Open Office Draw to easily and quickly edit PDF files. With Open Office Draw's inline editing features, you can edit any PDF document as easily as you can edit a Word document. It also supports adding and replacing images, changing font size and color, replacing default font-family, adding annotations, charts, shapes, tables all through an easy to use interface.

To load the PDF Import extension in Open Office, just open Extension Manager from the Tools Menu, click on Add and then select the location of the downloaded extension. For those of you who want a PDF Editor without any initial setup, LibreOffice, an Office suite descended from Open Office, has this extension included by default. If you don't mind the download size, Open Office Draw is simply the best free PDF editor available.

Credit to: http://www.tweakandtrick.com

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Computer (PC) Tricks You Should KNOW!!

noreply@blogger.com (Unknown) — Sun, 24 Feb 2013 23:00:00 +0000

Computers have simplified our life to a great extent. Things that were impossible earlier can now be completed instantly thanks to computers. But, does this mean that a PC is all work and no play?

Obviously not! Here are some of the best tricks you can try out on your Windows based computer.

1) Make your computer speak what you type
You can use your PC's built in features and some VBScript magic to create a simple program that will make your computer speak whatever you input to it. What are you waiting for? Head over to this post to start a conversation.

2) Find your computer's gender
Want to know if your PC is male or female? Simple. Try the previous trick to know if your computer is a 'he' or a 'she'.

On a serious note, this depends upon the voice you have selected in Microsoft Text to Speech options.

3) Lock Folders with password
Do you often have other people seeing your personal files? You can store them in a password protected folder so that only you can access them. Go see this post to know how to protect your personal files effectively.

4) Make your computer greet you every time you start Windows
A simple modification in the first trick will let you have an awesome computer said welcome that you can use to impress all your friends. Just read this post to make your computer welcome you in its own mechanical voice.

5) Have fun with the Notepad

If you think that Notepad is just a basic text editor, then my friend, you are horribly wrong. You can use Notepad to create everything from a personalized log to harmless viruses that are incredibly annoying. Go see this post to know just how useful Notepad is.

6) Command Prompt too has some tricks up its sleeves
So, you thought that Notepad has some tricks but not the Command prompt? If you thought so, then you would be surprised to see the amount of fun you can have from the Windows Command Prompt. Just see this post to get impressed.

7) Change your Processor's name
Are you bored of your old processor and want a new one with a staggering name? Change its name to something extraordinary to get that something special for your PC.

8) Make a Keyboard Disco
Use some VBScript coding to create a live disco using the LED keys on your keyboard. See this post to know how your keyboard can turn into a disco.

9) Use your Keyboard as Mouse.
You know you can use your mouse as keyboard using the On-screen keyboard. What if I tell you that it is also possible to do the reverse? Just read post to see how.

These tricks work on Windows 8, Windows 7, Windows Vista and Windows XP.
Credit to: http://www.tweakandtrick.com..

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A Guide to Computer Desks

noreply@blogger.com (Unknown) — Sun, 24 Feb 2013 07:18:00 +0000

Computer furniture has evolved over the years. Improvements in the design and decor of computer desks have revolutionized the way people work at the computer. With the increase in the number of computer accessories, such as keyboard, mouse, and additional attachments like the printer, scanner, hard disks, modems, the allotment of space for all these accessories has become a challenge. Modern office furniture has to be modular, movable and flexible.

The most important feature of a good computer desk is ergonomic design. As people work spend more hours at the computer, it is important that the desks are comfortable to sit at for long hours. Moreover, they have to look good and blend in well with the rest of the office or home. As greater comfort ensures greater productivity, companies are more willing to provide the best computer desks for employees.

Modular computers desks provide flexibility and versatility in use – they can be remodeled very easily depending on the use. These are ideal for the limited office spaces of today, and also work well in homes because they can be easily changed according to different requirements. Fittings are provided to accommodate various other accessories that may be required while using the computer, such as a document holder, wrist rest, file hangers, CD holders, or telephone shelf. Such desks are also often accompanied by a manual that contains comprehensive instructions for assembling or disassembling the unit. On the whole, computer desks today are leaner, and have fewer drawers and more shelf-space than before.

In most modern computer desks, the unique arrangement of the panel systems ensures optimum space, privacy and advanced wire management. The spine of the desk should be designed to not only provide power and data to the whole unit but also to support the desk assemblies, staking storage, divisional screens, transfer screens and other accessories. The end result is optimal space utilization.

A versatile computer desk should not necessarily compromise style. Computer desks are being designed with every kind of material possible ranging from traditional oak and wood to metal, glass and fiber.

About the Author
Computer Desks Info provides detailed information on corner, glass, roll top, home, child, oak and cheap computer desks, computer desk hardware, and more. Computer Desks Info is the sister site of Office Chairs Web.

Written by: Ken Marlborough

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Computer Knowledge: 5 Tips To Protect Yourself From Being Hacked

noreply@blogger.com (Unknown) — Thu, 15 Sep 2011 07:11:00 +0000

I was hacked this weekend !!!

If you've ever had a car stolen, your house broken into or your bike wheel "roll off" you know the feeling — you're exposed, vulnerable and looking for answers as to how this could have happened.

I've never been hacked before (at least to my knowledge) and immediately researched what to do and how to guard against it happening again.

Not all hackers are malicious, but those bent on ill will are usually exploiting security loopholes in the websites we use. While the average user can't do much about lax security on the site itself, we can make our browsing experience safer. Here are five tips for doing so:

Use HTTPS Everywhere
When using public wifi, your computer and login credentials can be "sniffed" by malicious hackers on the same network. Always use HTTPS to secure your information. HTTPS Everywhere automatically forces HTTPS onto hundreds of popular sites, thus ensuring your safety. You can download the free plugin here.

Careful where you click
Most of us are well acquainted with not clicking of fishy links in email. But if you happen to use sites such as Twitter or Facebook, you're not out of the dark. If links from friends look "spammy", it's often the case that their account has been phished. Avoid clicking on the link (or even hovering over it, in some cases). Whenever in doubt, don't click!

Create a different secure password for each account
The truth about passwords is that we are horrible at creating good ones. Too often, it's your cat's name, your wife's maiden name or your favorite celebrity. Secure passwords should be a random combination of letters, symbols and numbers. Applications such as 1Password are excellent at generating random passwords and keeping a list of them so you never have to wonder. Best of all, 1Password syncs on the Mac, PC, Android and iOS with Dropbox, so you can store your passwords and always have them synced with your devices. I highly recommend using this application or something similar.
And remember, don't give your password to ANYONE!

Encrypt your data
In the case that you are hacked, you'll want to make sure your important data is safe. TrueCrypt, free and open source encryption software, is available for Mac and PC and can do just that.

Shop safely online with temporary credit card numbers
Worried about giving your credit card number to some no-name guy in Florida in exchange for sending you some rad Ghostbusters patches? Well I sure was! Most, if not all, banks offer the ability to create a temporary credit card number. This number can only be used once. It links directly to your credit card, so you can keep your actual number safe.

I hope these tips have been helpful. If you've got your own to share, please let us know how you keep safe in the comments.

Computer Knowledge: Tech Tips for Troubleshooting Your Computer

noreply@blogger.com (Unknown) — Tue, 13 Sep 2011 08:27:00 +0000

A broken computer can seriously impede your work flow. Find out how to troubleshoot some basic computer problems in order to avoid losing valuable time and effort to a malfunctioning PC.

A malfunctioning computer can spell disaster for students and office workers alike. Whether you’re a student at Absegami High School, the Richard Stockton College of New Jersey, or you’re an employee at a local office, you can save yourself a lot of trouble by knowing how to troubleshoot some common PC problems.
One of the most common computer issues is a significant slowdown in the performance of the computer over time. If your computer is running slow, it can mean your computer is launching too many applications on start up; it can mean you’ve got some malware on your system slowing it down; or it can mean you’re in need of a RAM upgrade.

Make sure you have an up-to-date antivirus installed on your computer. If you don’t have one, check out Avast or AVG–both are free, and both do a great job of monitoring your computer for malicious software.
Run a full system scan with your antivirus of choice once a week and you’ll be able to remove most malicious software from your computer.

In order to make sure your computer isn’t starting too many applications when it boots up, you’ll have to open up msconfig and make some changes. In windows XP, open the start menu and click “Run”. Type in “msconfig” and press enter to open it.

In Vista or Windows 7, just type msconfig into the search box at the bottom of the start menu and hit enter.
Once you’re in msconfig, click on the “start up” tab. You’ll see a list of applications with checkboxes next to them. The only checkboxes that should be filled are those for programs you want to run when Windows starts up.

Once you’ve cleaned up the start up section, move on to the “services” tab. At the bottom of the services tab, there’s a checkbox that will hide all of the services from Microsoft – make sure that box is checked.
Uncheck any services you don’t need running all the time. If you’re not sure what a service does, take a second and Google it. Some of the services are tied to the various pieces of software you use, and disabling a service that’s tied to a piece of software could cause performance issues, so it’s important to know exactly what you’re disabling.

If all else fails, you can always reformat your computer using the recovery disc that came with it. By doing so, you’ll be resetting the computer to the way it was when you first bought it, so make sure to back up all of your files before doing this.

You can also boost your computer’s speed by installing additional RAM. You can usually get RAM for a reasonably low price by purchasing it on Amazon, and installing it yourself, but if you’d rather have someone take care of the installation for you, most electronics stores offer free installation when you purchase a stick of RAM from them.

Anyone who owns a Windows PC is familiar with the blue screen of death. Each blue screen lists a STOP error made up of a series of numbers and letters. While they might look like nonsense, those characters actually indicate what went wrong with your computer to cause the BSoD.

This guide will help you decipher those codes, and figure out what went wrong with your computer.
If your web browser’s homepage keeps changing, or if you keep getting a different Web page than what you were expecting when you click on a link, you’ve probably got some spyware on your computer.

Malwarebytes will find, and remove just about any piece of malware on your computer. Fire up the software, let it check for updates, and then run a full scan on your computer. If you’ve got spyware interfering with your web browser, Malwarebytes should take care of it.

You aren’t going to be able to solve every computer problem on your own, but by using these troubleshooting tips, you can eliminate some basic problems without having to go to a repair shop, or contacting the company’s IT guy.

12 SSD tips to optimise your drive's performance

noreply@blogger.com (Unknown) — Fri, 29 Apr 2011 13:02:00 +0000

Keep your SSD in trim condition with these handy tips

Solid state drives have tumbled in price in recent months, which is great news for us demanding PC users.

There's a problem though: Windows isn't fully optimised to get the best from SSDs. There's also the lingering worry about the longevity of this type of storage device.
We say don't be put off - the benefits of fitting a solid state drive far outweigh any potential downsides. Happily, the negatives that remain can be sidestepped easily with some tweaks and tips. Read on and we'll show you how to make your solid state drive purr.

1. Reduce write-heavy tasks
One of the early concerns about solid state storage was that it wouldn't be able to handle the same intensity of read/write cycles that traditional hard disks manage. Many tips for extending the life of drives centered around reducing unnecessary writing to disk.

Things have improved considerably since then and, while this concern is still broadly justified, you'd have to write intensively to disk for many years before you'd wear out a modern SSD.
However, write times are still a little slower than read times for these drives, so in theory reducing the number of write operations to SSD should result in a performance boost. Moving temporary storage or working folders to RAM may help, but avoid merely transferring these to a slower drive, otherwise you won't see any improvement.

2. Enable write caching

This is generally enabled by default, but it's worth checking that data written to the drive is cached in its RAM before it's stored permanently. There's a slight risk that a power outage will wipe out the data stored temporarily in RAM, but this is only really a problem with external drives that don't have their own power source.

You can check to see if write caching is enabled in Device Manager. To do this, right-click 'Computer' and choose 'Properties'. Select 'Device manager' from the left-hand pane and expand 'Disk drives'. Select the solid state drive, right-click it and choose 'Properties. Select the 'Properties' tab and tick the box marked 'Enable write caching'.

3. Tweak paging files
Using a portion of hard drive as virtual memory can lead to intensive writing to the disk for swap purposes, which can degrade SSD performance. You can achieve some speed boosts by moving the swap file to a different disk, or turning it off altogether if you have sufficient RAM installed.
Virtual memory tweaks like these produce varied results depending on the kind of operations you need to carry out.

To move the file, click 'Start', right-click 'Computer' and choose 'Properties'. Select 'Advanced system settings', choose the 'Advanced' tab and then click 'Settings' under 'Performance'. Choose the 'Advanced' tab and click 'Change' under 'Virtual memory'.

Clear the box marked 'Automatically manage paging file size for all drives'. Select the SSD and choose the radio button next to 'No paging file'. Click 'Set', then click 'OK' in each of the open dialogs to clear them.

4. Move temporary files
If you have another drive available, try moving your temporary Windows files onto it. Again, this reduces the need to write to the SSD during routine Windows operations.

Choose 'Start', then right-click 'Computer' and select 'Properties'. Choose 'Advanced system settings', pick the 'Advanced' tab and click 'Environment variables'.

You should see values listed for 'temp' and 'tmp' for the current user and the system. Select one of these and choose 'Edit' to move it to a different folder. Make sure you select one that's on a different drive.

5. Disable indexing

Disabling indexing on your SSD may help reduce writing to the disk, but think carefully before you decide to do so. Indexing can have a negative impact on your drive's performance, but it can also massively improve your productivity if you have a lot of data on the drive and you need to find something quickly.
The improvement in performance is likely to be negligible at best, but if you're keen to squeeze the most out of your system, it may be worth considering.

If you decide to disable indexing, open 'Computer' on the Start menu, right-click the SSD and choose 'Properties'. Towards the bottom of the dialog, clear the box marked 'Allow files on this drive to have contents indexed in addition to file properties'.

6. Create a RAM disk
It's not always practical to move temporary files and so on to a different drive - you might not have one available, or what you have might be of markedly lower performance than the SSD itself. One way to get around the issue of moving the various caches to a different disk is to create a RAM disk, which will run at lightning speeds compared to any physical drive.

You need at least 3GB memory installed to use a RAM drive for caching, and the more you have available, the better its performance will be. You can install a RAM drive using the Dataram RAMdisk program, which is available from here.

Download and install it. Once the program is launched, you need to open the 'Settings' tab and select the filesystem you want to use for the drive. Enter the disk size, bearing in mind how much memory you have available, and click 'Start RAMDisk'. The free version lets you set up drives up to 4GB in size.

7. Move caches to RAM disk
Now that you've set up a RAM disk, you can move Windows caches to it, thereby reducing the strain on your SSD and prolonging its life.

In fact, even if you don't have an SSD but have enough RAM available to set up a drive, this is still a great way to improve system performance, because RAM is always faster than a physical drive. Just bear in mind that all its contents will be lost once the power is shut down.
8. Temporary internet files
You should consider moving your internet cache to the RAM drive too. To do this, go to 'Control Panel | Internet options', then select the 'General' tab and choose 'Move folder'. Browse to your RAM drive for the new folder.

If you use Firefox, enter about:config in the address bar and search for 'browser.cache.disk.parent_director'. You can now double-click this value and enter the new location for your browser cache.

9. Check TRIM functions

The TRIM command lets operating systems inform SSDs which data blocks are no longer needed so they can be wiped internally. This helps to keep the disk in optimum condition, and therefore maintain its performance. Windows 7 supports TRIM, but it may not be enabled in your system.

You can check the status of TRIM by launching the command prompt using administrator privileges. To do this, go to 'Start | All programs | Accessories' right-click 'Command prompt' and choose 'Run as administrator'.

Now enter the following command:
fsutil behavior query DisableDeleteNotify
Press [Enter]. If TRIM is working correctly, you'll get a response of 0 (zero). If the result is 1, then you'll need to enable TRIM by entering the following command:
fsutil behavior query|set DisableDeleteNotify = 0

10. Check disk TRIM support
Not all solid state drives support TRIM, although you'll find that an increasing number do. It's a good idea to check through your drive's documentation or go to the manufacturer's website to see whether or not it's supported.

There may well be a firmware upgrade available for your drive that enables TRIM, so this is worth investigating too. You should be able to get this from the support section of the manufacturer's site, along with instructions on how to apply it.

11. Advanced Host Controller Interface
Windows Vista and 7 natively support the AHCI SATA controller standard, which enables faster data throughput, but it's worth checking that your motherboard does too.

Enter the BIOS by restarting your PC and hitting [Delete] as it starts up, or watching for the key combination displayed for you to enter the CMOS utility. The location varies, but it's often in chipset settings. If you find it's disabled, enable it.

12. SSD Tweaker

As an alternative to tweaking Windows settings manually to get the best configuration for your SSD, you can get a tweaking program such as SSD Tweaker to do the hard work.

The free version lets you clear the paging file and disable indexing, system restore, NTFS 8.3 name creation and file date stamping. There's also a handy 'Auto tweak settings' button that sets the most common SSD tweaks in a single operation.

The pro version includes more advanced settings, like querying the TRIM status and modifying hibernation settings. There's also a TRIM optimisation manager that enables you to optimise TRIM for your drive.

Computer tips: How to Create System Repair Disc in Windows 7

noreply@blogger.com (Unknown) — Tue, 24 Aug 2010 05:06:00 +0000

Sometimes your Windows 7 can be crashed or even damaged. We can predict that thing happen to us. So, a Windows 7 system repair is an important thing you should have. System repair disc in Windows 7 can be used to repair Windows, restore Windows to an earlier time, recover Windows with a system image, check computer memory from errors, and using command prompt. Today, I will show you how to create system repair disc in Windows 7.

Before you create a system repair disc, please provide a blank CD/DVD and a CD/DVD writer hardware. Here’s is how create System Repair Disc in Windows 7:

Open Control Panel. Click on Backup your computer under the System and Security item.
Click Create a system repair disc menu on the left side of the window.
On the Create a system repair disc window, select your CD/DVD drive and make sure you have inserted the balck CD/DVD into teh drive. Click Create disc to start creating system repair disc.
The create system repair disc process will start. Wait until it completed.

When the disc burning finished, you can start using the system repair disc to repair your Windows 7.

What is Bluetooth?

noreply@blogger.com (Unknown) — Fri, 20 Aug 2010 04:11:00 +0000

Bluetooth is really an amazing creation in the field of technology. It is used to transfer any kind of data like voice, images and multimedia files (audio, video, mp3, mp4 etc.) over a short distance. It is known as an open wireless technology which is now commonly in uses with most of the technology giants being a necessary part of their accessories in which mobile companies are most common.

Bluetooth actually uses radio transmissions of short wavelength to transmit date from one device to another device and thus a PAN is being created between these two devices. PAN stands for personal area networks. One best feature of this technology is that it transmits data with high level of security. Ericsson is known as the creator of this open wireless technology form.

Bluetooth was created in year 1994. Originally it was designed as a replacement of RS-232 which is widely known as data cable. It can make a connection with more than one device simultaneously which really solved a lot of connection problems. “Bluetooth Special Interest Group” is the organization which is currently responsible to handle this unique open wireless technology.

A radio technology which is known as “frequency-hopping spread spectrum” is being used by Bluetooth to transmit data between devices and data can be transmitted up to maximum of 1 MHz’s 79 bands. Approximately seven devices can be connected through the master Bluetooth device within one user group of wireless. This type of user group is named as “piconet”. The roles of these devices can be changed at anytime within the same user group.

Bluetooth is widely available in several products around the globe in which most common are Lego Mindstorms NXT, PSP Go, iPod Touch, PlayStation 3 and Wii. It is also made available in headsets, moderns and watches.

Computer tips - Computer energy saving

noreply@blogger.com (Unknown) — Thu, 19 Aug 2010 07:01:00 +0000

Not only is your electricity bill going up with your computer use, you are using more energy than you should and that in turn effects the world. Often we don't think about what effects that our computers have on the environment, but the truth is that they use a lot of energy. There are things that you can do to conserve energy though. Save money on your bill and make a difference in the world, what could be better than that?

Upgrade.
While it isn't always possible, getting a new computer is a good way to save energy on your computer use. This is especially true if you have an older monitor. You want to get a better processor and upgrade your monitor at least. If you are wanting to save a lot of energy in your upgrade consider a laptop or a Mac. Both use less energy. Another thing that you can look for if you are looking to buy a whole new system that is put together for you is an Energy Star efficient computer. While fairly new to the market you can get the Energy Star of approval which is only given to the top 25% of computers that are ranked from lowest to highest according to energy used.

*Don't just throw your old computer, monitor, or parts away. Instead find someone who will be able to use them or recycle them. There are always people who would love to be able to have a computer (any computer) and they will be glad to take yours or those that build computers from parts who will reuse your parts.

Set to sleep.
Whether you call it sleeping, hibernating, or going into stand by mode, you will want to set your computer to do this. This will decrease the amount of energy that your computer uses to nearly nothing. Give it a few minutes and after a short period of time it should sleep while you are away.
Don't be afraid to turn it off.

Many people believe that turning off the computer too much will damage it. This isn't true and you can turn it off several times a day if need be. This will save energy and if you are going to be gone a little while. When you turn your computer off make sure that you also turn of your speakers, your monitor, and other electronics hooked up to your computers. While they don't use a lot of energy, they do use some even when the computer if off. One easy suggestion to use if you have a lot of electronics is to plug everything into a power strip so that you can turn off the power strip and turn off everything in one easy move.

Your computer is using energy when you turn it on. It uses more energy when you do more things with it. It is a good idea to close windows and applications when you are done using them, to make sure that you are working with the best machine you can, to use the computers energy saving settings, and to turn it off when you aren't using it. These things will lower your energy bill and help save the world!

Computer Tips - Hide control panel

noreply@blogger.com (Unknown) — Tue, 17 Aug 2010 04:22:00 +0000

The best way to make it clear you don't want people poking around your computer is to block their access to the Control Panel.

The Control Panel is the portal to the operating system’s options and settings. By hiding it from the other users you can be assured that your computer will remain exactly how you configured it.

You can accomplish this easily in Windows XP, Vista and 7 with a simple Registry modification.

Warning! Before we go any further, I'd like to point out that messing around with the Windows Registry is not meant for beginners. Editing the Registry directly can have serious, unexpected consequences that can prevent the system from starting and require that you reinstall Windows. If you feel you do not understand or are unable to perform the steps below, please seek expert advice.
In addition, I recommend backing up the Registry before attempting any modification.

To back up the entire Registry in any Windows version, open the Registry Editor (see instructions below), click on the My Computer (or Computer for Vista and 7) key at the top and select File in the top left corner of the window. In the File menu select Export…, give it a name like registry backup and choose a safe location to save your file.

If something does go wrong while editing, you can restore the Registry by navigating to where you saved the .reg file and simply double-click on it.

Now that you have backed up the Registry, we can proceed with the rest of the article.

To change a Registry setting we must first open the Registry Editor.

Go to the Start Menu and click on the Run command, situated above the Turn off Computer button. Then type the command regedit in the Open box and click the OK button.

To access the Registry in Windows Vista and Windows 7 you must log in with an administrator account.

Alternatively, type regedit in the search bar of the start menu, right-click on regedit.exe and select Run as administrator.

The Registry Editor will now open.

The setting we need to change is located in the Registry structure, at the following address:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced

Click the plus sign next to HKEY_CURRENT_USER and scroll down the list until you locate Software.

Then click the plus sign next to Software and look for Microsoft.

Then click the plus sign next to Microsoft and look for Windows.

Then click the plus sign next to Windows and look for CurrentVersion.

Then click the plus sign next to CurrentVersion and look for Explorer.

Finally, click the plus sign next to Explorer and left-click on Advanced.

With the Advanced key selected, right-click on an empty spot on the right side of the Registry Editor window.

Click New, and from the menu, select and click on DWORD Value.
If you have Windows Vista or 7, click on DWORD Value (32-bit).
Then, type Start_ShowControlPanel and press Enter from the keyboard.

Next, right-click on the Start_ShowControlPanel value and from the menu select Modify.

Under the Value Data field, type 0 (zero) and click OK.

Now, close the Registry Editor by clicking File, then Exit from the menu, and restart your computer.

After the restart, if you look under the Start menu, you will not see the Control Panel entry anymore.

Of course, you can always bring back the Control Panel if you want to make a change or remove a program.

Just follow the steps above until you reach the Start_ShowControlPanel value, double-click it and change the Value Data field to a 1 (or just delete the value).

Note: The Control Panel is not removed or uninstalled from your computer, it is only hidden. Therefore, any user that has administrator rights and knows where the Registry entry is located can make the Control Panel visible again.

Computer Tips - Delete Internet History

noreply@blogger.com (Unknown) — Tue, 17 Aug 2010 04:11:00 +0000

One important feature of the computer is the Internet history feature, which enables users to retrace the websites they have visited previously. Sometimes it may be important for the user to be able to go back to the previously visited sites and the links are still in the history feature.

However, as the user continues to surf the internet, the history will just pile up until eventually it slows the performance of the computer and makes it sluggish. Therefore knowing how to delete internet history is useful to free up some space on your computer and continue to enjoy a trouble free computing experience with a faster and more effective computer.

Deleting internet history is not difficult to do. Anyone can learn how but first having a key board will be important with Microsoft Windows and Internet Explorer.

With all these key elements present, then just double click on the Internet Explorer icon. This is usually present in the start menus of the computer. When you have opened the internet explorer icon look for the tools option and click it. This is usually found on the top left hand of the computer screen. Then a selection of applications will appear in a column. This is where you look for the internet options menu and clicking it will open up a dialog box. Internet explorer 7 and earlier versions will have similar features. From there in the dialog box just click on delete browsing history.

There is a section named browsing history commonly found at the middle part of the column box that appears. Look for the delete button, click it and it will start clearing the history of your visited sites, once that is done, and the rest of options appears. Explorer 7 users will have a dialog box that has several options to choose from what to erase.

To makes sure that all the past visited websites are deleted, it is important to click the button labeled Delete History. A dialog box usually appears after that to double confirm whether you are sure that you wish to delete the history of visited websites. When you click yes, the computer starts deleting and of which you may have to wait a few minutes, depending on the volume of files that has accumulated in your computer.

Obviously, with bigger files, you may have to wait longer. Finally, when it is done just click on the close button and then select the Ok and you can exit. Clearing up the files and deleting them will free up a lot of processing space that can let your computer run more efficiently. In addition, as you delete the internet history in your computer, deleting of the temporary internet files is possible. The more files you delete, the more space you will clear up. This is especially for files that is no longer needed and serves no purpose in your computer.
Deleting files clears up space on Your computer.

Just remember to save your favorite websites or passwords when you use this feature.

Computer ???

noreply@blogger.com (Unknown) — Fri, 13 Aug 2010 02:47:00 +0000

A computer is a programmable malchin that receives input, stores and manipulates data/information, and provides output in a useful format.

While a computer can, in theory, be made out of almost anything, and mechanical examples of computers have existed through much of recorded human history, the first electronic computers were developed in the mid-20th century (1940–1945). Originally, they were the size of a large room, consuming as much power as several hundred modern personal computers (PCs).Modern computers based on integrated circuits are millions to billions of times more capable than the early machines, and occupy a fraction of the space.

Simple computers are small enough to fit into mobile devices, and can be powered by a small battery. Personal computers in their various forms are icons of the Information Age and are what most people think of as "computers". However, the embedded computers found in many devices from MP3 players to fighter aircraft and from toys to industrial robots are the most numerous.