science for hunt

Working With CACHE

2013-12-07T09:47:00.000-08:00

Cache Memory is considered a fastest memory, not totally because of its cell structure or type of semi-conductor used, its considered fast because the response time it quick when compared to all other memories.

One thing you must know in-order to move further is, caching of a memory is decided my MMU, so MMU and Caches are always interlinked. MMU tables will decide which part of the memory is cacheable and which are not, and the caches contains the value at that corresponding address( or virtual address).

Normally we do two operations on cache. Cache Flush and Cache Invalidate. For those all who are new to these concepts,

Cache Flush : Writing back values(present in cache) of the mapped address to its physical memory(ddr)

Cache Invalidation : Making mapped address invalid ( undo the mapping).

As shown in the figure you can see caches have many levels, L1 , L2, L3 and each one may also be divided into Instruction cache and Data cache.

Caches can give trouble in some situation , i will explain some situations :

1) If some memory area is mapped to cache and processor is working on it, and in between you do a DMA transfer to the same address. Then the new data present in real memory(ram) will not be reflected in cache as no where processor was involved in DMA transfer. So processor still keeps on working with old data present in cache.

2) If we invalidate cache without flushing it, what happens is the new calculated data present in cache will not be written back to real memory, they mean while if processor tries to access that memory result may be unknown.

12 Atoms for BIT (NANO MEMORY DRIVE)

2012-02-27T05:58:00.000-08:00

    IBM researchers have invented a new form of data storage, where 12atoms are sufficient to store a BIT of data, where as present modern status is millions of atoms per bit. These memory chips will have capacity 100times more than the present solid state chips.IBM researchers have successfully used 12 atoms to store a bit by aligning their magnetic properties so that the group of atoms would not interfere with their neighboring group of atoms.

    This invention will break the Moors law, which tells that no. of transistors in a micro chip will double for every two years.

    I your present 4gb pen-drive is made with this technology , you can store all the movies that you seen from your child hood ,or even you can have a copy of YOUTUBE in your hands.

    Researchers mention , it will consume many years to bring this innovation into the market, as the chips are to be made atom by atom using nano-technology , and the present 12atom formula works at low temperatures only(less than 5degrees). And they have said 120 atoms per bit can work under the room temperatures , which will be much much efficient then present this . Hope this era of nano-technology begins soon.

For more reference visit the IBM research page
And this video from BBC will digest your quick

PAINTING LIGHT

2012-01-17T00:14:00.000-08:00

Hey don't worry Im alright!, "Painting light" its true its the future. Buying lights is an old idea, Painting lights is a new Idea. Yes , it became possible by OLED(Organic Light Emitting Diodes ) . These are the Organic LED's , whose size is 1000 times smaller than than the normal LED's , made up of the thin fiber type material .
Development is still in process but recently GE has invented a method to print the Light by using the OLED's .

                            The Future of Television

   By this technology in future we can have tv's which you can roll up take it any where( just like a carpet) , or a part of your wall can act a your desktop Monitor , Your mirror can show up all the messages and email for you when you wake up.

    But we have a disadvantage with this technology , on which the tech people still working to overcome,
diadvantages"
1)its life span is 1000 hours only
2)it can be damaged when its in contact with water and Oxygen

Watch the video of GE, which doing the Project on Present Technology

TRICK TO HIDE THE FILES

2011-08-19T06:51:00.000-07:00

Hi frndz , most of them would have problem in hiding your personal data in your system , today I will show you the simplest trick to hide your files in your pc just by creating a .bat file.

Follow the 7 simple steps

1)Open note pad

2)Copy the following code to it

if EXIST "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" goto UNLOCK
if NOT EXIST Locker goto MDLOCKER
:CONFIRM
echo Are you sure u want to Lock the folder(Y/N)
set/p "cho=>"
if %cho%==Y goto LOCK
if %cho%==y goto LOCK
if %cho%==n goto END
if %cho%==N goto END
echo Invalid choice.
goto CONFIRM
:LOCK
ren Locker "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
attrib +h +s "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
echo Folder locked
goto End
:UNLOCK
echo Enter password to Unlock folder
set/p "pass=>"
if NOT %pass%==type your password here goto FAIL
attrib -h -s "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
ren "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" Locker
echo Folder Unlocked successfully
goto End
:FAIL
echo Invalid password
goto end
:MDLOCKER
md Locker
echo Locker created successfully
goto End
:End

3) Now save it with any name with ".bat " as extension

ex: lock.bat

4)Now double click on the bat file created , a new folder with name 'Locker' will be created.

5)Move the content which you want to hide into the Locker folder

6)Now again double click on the .bat file , now cmd window will open, now type 'y' to hide the folder

7)Repeat th step 6 to get back your hidden files.

Comment on this post if you have any problem in doing it, I can help you

thank for reading, meet you in next post :-)

PUT A BACKGROUND IMAGE FOR YOUR PENDRIVE

2011-08-18T04:54:00.000-07:00

Its so simple and cool trick , you can amaze your frnds and close with this, try it

There are only three easy steps , lets get down to work now :-)

open the usb drive

and copy this code in a notepad

[{BE098140-A513-11D0-A3A4-00C04FD706EC}]
IconArea_Image=img.jpg
IconArea_Text=0×000000

save the file as desktop.ini

img.jpg write the image file name you wnt to put it as back ground
note:image must also be copied in the pendrive

I have done it

now show wheres yours? :-)

BATTERY DOWN ,THEN SHOUT!!

2011-05-09T07:45:00.001-07:00

This is the most crazy invention ever ,charge up up battery by yelling at it, the much u shout the much it charges

     It uses the reverse principle of a loud speaker, which coverts the electric signal to voice,
the present technology converts voice to electricty. Scientists say this technology is used up to charge up the cell phones , ipods and all other low voltage devices.

     The devices made so far can convert up to 1000db , which is equal to noise in traffic , a near by train noice etc.

     So if there is rock band concert nearby ,then attend it for atleast 5min!

Blogged with the Flock Browser

VIRTUAL SIM

2011-05-08T01:59:00.000-07:00

I future SIM card are going to be part of the museum ,yes they are of no use in the future

With this technology a single phone can be used by many users(&one can use more than one SIM with a single mobile). In this new idea , a user name and a password will be given for the each user,by which he/she can login into a network by the user name and use the network, and the same mobile can be used by another person by his user name and password.This technology use much user friendly ,and it is reduces the cost of buying and manufacturing SIM card.

thanks for reading, see u in next post

LOST CAR KEYS !! THEN UNLOCK IT USING CELL PHONE

2011-02-07T08:02:00.000-08:00

When ever anyone have lost ur car keys, it will be very difficult to go home and get the spare keys to get ur car back home ,there is a very simple way to unlock the car without using a hammer or a iron scale, if u have spare keys in your home, u can fix it up using ur cell phone

           Just tell the person who is having spare keys to press the unlock key near the cell phone's microphone, the job of yours is to put the call in speaker mode and take a 3feet gap b/w you and car ,and that's it ,your car will be unlocked when instantly the other person presses unlock

      For more info see this video

YO-YO CHARGERS

2010-07-16T06:50:00.000-07:00

Its a brilliant idea by some one in the world ,who looks the different side of electronics

All of them may know about the yo-yo, its a playing toy ,for some of them it entertainment ,for some its a game for making some money, and some charge their ipod with it, hahaha isn't it funny

Funny but true,we can generate some energy from the yo-yo toy,the principal is conversion of kinetic energy into electrical,the circular movement of yo-yo makes it to act as any dynamo . if u think different you can apply the same concept to the TOP(playing toy-bongaram) .Its not so hard to do,what we want is an idea to work on it.

Then what ru waiting for, just do yo-yo and charge up Ur phones

thank u for peeping the blog,keep peeping frequently &comment

AN idea(please comment on it)

2010-06-26T03:25:00.000-07:00

CHARGE UR phone WHILE U TRAvael

2010-06-26T03:04:00.000-07:00

hi frnds ,im back aftr a long time

I have a different ideal of charging ur mobile ,this application is same as to run a car while travelling(view my previous posts).

For this,it requires

1) alternator (YAF-54)
2) A small fan which can be used as a turbine
[note: the fan should have the ability to move the alternator shaft]
3) a rectifier
4) voltage regulator ic(output:5v)

the terminals which u will get from voltage regulator can be directly connected to u phone battery terminals

please comment on this post,plz plz plz
&thanku for reading it:-):-):-):-)

compressed air technology

2010-04-06T10:48:00.000-07:00

A new technology has evolved in the history of vehicles

u know about the cars that run with fuel,with solar power,now a new technology came into existence that is compressed air technology

the concept is same a balloon,when we blow a balloon ,some air is compressed a stored inside its volume now if u pin it up the a tremendous amount of force comes out of it,

the same concept is applied hear,me store huge amount of air inside a cylinder ,with several millions of pascals of pressure. The air pressure in the cylinder is used to run the pistons inside the engine.For more information just do googling as "COMPRESSED AIR CAR"

its simple,even u can come up with these brilliant ideas

keep visiting the blog

2010-03-28T04:13:00.001-07:00

Click Here For Images &
Friendship Pictures

Broadband over Power Lines (BPL)

2010-03-22T09:09:00.000-07:00

IBM has announced to establish a new network that will bring broadband Internet service to nearly 200,000 rural customers served by 7 rural electric cooperatives in Alabama, Indiana, Michigan and Virginia. IBM is promoting a technology that allows broadband to be moved over electric power lines. The company says the technology will allow customers to buy (or rent) a modem that plugs into existing electrical outlets.

Its simple, the new technology helps up to connect Internet via our house electric slot es,here the technology used is,the high frequency current waves are used a carrier of the messages (i.e the Internet) ,we can ac hive up to 200mbps speed with this tech..just u need is a modem which connects to the electric plug ,and carry MOdulate and DEmodulation i.e MODEM. so lets hope this tech. comes to India soon,

the surprising thing to say is ,this idea was proposed by two Engg. students of India from A.P there are from anantapur Dist.

Be proud to be INDIAN

smell transmission

2010-03-18T09:55:00.000-07:00

This is a new invention by japan scientists

Like sound effects in movies, if we can transmit smell then how nice would it be to have the aroma of the restaurant environment where the hero and heroine is dating...
or how would it be when doctors can make our checkup by diagnosing our bad breath.

this is called virtual reality in,on which many scientists are working on,its the transmission of smell .

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The technology has so far targeted mainly our sense of sight and sound. To further enhance the virtual reality experience and another flavor to it, technology is now targeting your nose and tongue.

The application area of virtual reality is vast- from normal entertainment to the Internet and e-commerce application. You will be able to smell product before buying them online.

Magic in WINDOWS XP os

2010-03-15T11:15:00.000-07:00

hi friends these r some amazing facts
by which u can mesmerize your friends

MAGIC #1
Nobody can create a FOLDER anywhere on the computer which can be named as "CON".
This is something pretty cool...and unbelievable. ..
At Microsoft the whole Team, couldn't answer why this happened!

MAGIC #2
Open Microsoft Word and type
=rand (200, 99)
And then press ENTER

MAGIC #3
do the following:
1. Open an empty notepad file
2. Type "Bush hid the facts" (without the quotes)
3. Save it as whatever you want.
4. Close it, and re-open it.
Is it just a really weird bug?
You can try the same thing above with another sentence "this app can break"

a short film by my brother suneel prasanth

2010-03-15T10:46:00.000-07:00

RUNNING A VEHICLE WITH ITS OPPOSING FORCE

2010-03-13T05:20:00.000-08:00

A new power packed performance super car has been designed in California that can run at the speed of 155 mph without conventional fuel. For startup this car will use solar powerd battery but later draw its energy from circulating air. An advanced alternating current induction motor will glide the Formula AE. This motor will have a power output of 212 kilowatts

I can explain the above concept in simple language

see ur driving the car at 60km/hour ,and a huge amount of wind will be opposing ur car,this wind we must consider as a source of energy for this invention, if we can convert some of the wind energy into electric energy,it can be used in running the car without the consumption of fuel, how ever there will be some fuel is required at beginning for acceleration,

this my thinking ,have ur say on it

think different and make ur world look different

have u imagined about universe

2010-02-28T10:33:00.000-08:00

according 2 me our universe is a part of some ones body.
we have several organisms(i.e living things) in our body, which are living happy inside,our body is an universe for them,in the same way i think we are in the body of of a huge living thing,our universe may be considered as a small thing/object in it.

this is my imagination.

have Ur say on this topic.

think different and have ur world different