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Q.

What is BIOS? what it does actually ?

Asked by gauravkumar, 04 Mar '09 09:38 pm
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Answers (2)

1.

Basic input/output system, the built-in software that determines what a computer can do without accessing programs from a disk. On PCs, the BIOS contains all the code required to control the keyboard, display screen, disk drives, serial communications, and a number of miscellaneous functions.
The BIOS is typically placed in a ROM chip that comes with the computer (it is often called a ROM BIOS). This ensures that the BIOS will always be available and will not be damaged by disk failures. It also makes it possible for a computer to boot itself. Because RAM is faster than ROM, though, many computer manufacturers design systems so that the BIOS is copied from ROM to RAM each time the computer is booted
Many modern PCs have a flash BIOS, which means that the BIOS has been recorded on a flash memory chip, which can be updated if necessary.

The PC BIOS is fairly standardized, so all PCs are similar at this level (although there are different BIOS versions). Additional DOS functions ar ...more
Answered by sach dev thakur, 05 Mar '09 01:30 pm

 
  
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2.

BIOS is Basic INput Output Systems. It ensures basic input output to computer system . Instruction feeding to CPU etc.
Answered by Tushar Kher, 04 Mar '09 09:40 pm

 
  
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I thing you mean RAM:Random access memory...more

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