PRIMARY STORAGE DEVICES PART-2

Hi All,
 
     In my previous post "PRIMARY STORAGE DEVICES PART-1" explained about RAM.
Now i am going to explain ROM(READ ONLY MEMORY).this is a permenant memory.
it controlls all BIOS programms.In RoM mailnly three parts important.
Those are....

1)POST (POWER ON SELF TEST)

    IT WILL CHECK WHETHER ALL THE DEVICES ARE GETTING THE POWER SUPPLY OR NOT.

2)BSL (BOOT STRAP LOADER)

    IT SELECTS THE VALID BOOT SECTOR.

3)DRIVERS

    IT CONSISTS OF BASIC DEVICE DRIVERS AND CONFIGURATION OF MOTHER BOARD.

PRIMARY STORAGE DEVICES PART-1

Hi All,

In computer storage devices are devided in to 2 types .
Those are

1.primary storage devices .
2.secondary storage devices.


     First Let's know something about primary storage devices.RAM and ROM(Read Only Memory).RAM (randam access memory) It is a volatile memory (means requires power supplycontinuously) andit is a temporary memory.  it is divided into 2 types those are


1)SRAM (Static RAM)
           It is cache memory.two types of cache memory present those are L1 & L2
L1 (Internal Memory with in the mother board)
L2(External Memory ) when your buying a Mother Board L2 cache like this 1MB,2MB,4MB etc.

2)DRAM(Dynamic RAM)

          In DRAM various models are present.Those are
SD,DDR1,DDR2,DDR3,EDO        Let's know ...

SD(Synchronous Dynamic)

    The RAM 68 PINS and it's capacity is 32MB -512MB.5V POWER SUPPLY NEEDED.IT HAD A SINGLE NOCH AND 2 CUTS.

 DDR1 (DOUBLE DATA RATE)

    THE RAM 128PINS AND CAPACITY IS 2GB.IT HAD A 2NOCHES AND SINGLE CUT.CUT IS AT RIGHT SIDE.

 

 DDR2

    THE RAM  256 PINS AND CAPACITY IS 4GB AND 3.5V POWER SUPPLY NEEDED.CUT IS IN THE MIDDLE.

DDR3

   THE RAM  512 PINS AND CAPACITY IS 8GB AND 3.3V POWERSUPPLY NEEDED.THE CUT IS AT LLEFT SIDE.

 EDO(EXTENDED DATA OUTPUT)

   IT IS USED IN SPARC MACHINES.

NOTE:    In the upgradation of RAM two points are considered.
             
               1.Storage capacity should be high.
               2.power utlization should be less.

China makes fastest supercomputer

Hi All,
A research lab in China has made the fastest supercomputer in the world. With this, it has been able to replace US in having the hold on this segment of technology.

But as China is trying to realize its dream of becoming the best in hi-tech, US has asked it to control its demand in rare earth elements. These elements are used in many a high-technology applications and have been in great demand by China.
It's 1.4 times more faster than present Us supercomputer........

IBM hard disk in 1956

hi friends  every one now a days using large amout of hard disks in small size and up to 1TB hard disks are available for normal users  but in backend you can see what it is.

Guess what they are trying to lift?

 It's a hard disk in 1956... a hard disk drive with 5 MB storage.

In September 1956 IBM launched the 305 RAMAC, the first computer with a hard disk drive. The HDD weighed over a ton and stored a total 5 MB of data.

So start appreciating your memory stick or portable harddrive which has thousand times the capacity of this monster!

TrendNet 4-Port USB 3.0 Hub is out

Now trend for usb3.0 version

TRENDnet’s 4-Port USB 3.0 Hub provides four super speed USB 3.0 ports to connect flash drives, storage enclosures, cameras, and other USB 3.0 devices to your computer.
You don't require to download any drivers and you can plug into any USB3.0 port on your PC .

Simply connect to an available USB port on your computer with the included USB 3.0 cable (backward compatible with USB 2.0). Upgrade to super speed USB 3.0 with TRENDnet’s TU3-H2EC or TU3-H2PIE. An included power adapter ensures proper operability of power hungry bus-powered connected devices.

Intel Parallel Inspector 2011

Application reliability and quality, Intel Parallel Inspector, gives both experts and novices greater insight by finding threading and memory errors before they happen. Benefits: Increases serial and threaded application reliability regardless of the threading method used Works on standard debug builds Simplifies finding and fixing the cause of the error, including nondeterministic errors Helps ensure that shipped applications run error-free on customer systems Reduces support costs and increases productivity