Friday, March 12, 2010

BIOS - Basic Input Output System

Posted by Unknown | Friday, March 12, 2010 | 0 comments

Basic Input/Output System is the program which starts up your computer and communicates between the devices in your computer (such as your hard drive and graphics card) and the system. BIOS is normally stored in an EPROM chip (Eraseable Programmable Read Only Memory).

The BIOS is one of the first things that happens when you turn your computer on. The BIOS introduces the core components (Hard drive, Motherboard, Processor, Memory etc) to each other.

BIOS (basic input/output system) is the program a personal computer's microprocessor uses to get the computer system started after you turn it on. It also manages data flow between the computer's operating system and attached devices such as the hard disk , video adapter , keyboard , mouse , and printer .

BIOS is an integral part of your computer and comes with it when you bring it home. (In contrast, the operating system can either be preinstalled by the manufacturer or vendor or installed by the user.) BIOS is a program that is made accessible to the microprocessor on an eraseable programmable read-only memory ( EPROM ) chip. When you turn on your computer, the microprocessor passes control to the BIOS program, which is always located at the same place on EPROM.

When BIOS boots up (starts up) your computer, it first determines whether all of the attachments are in place and operational and then it loads the operating system (or key parts of it) into your computer's random access memory ( RAM ) from your hard disk or diskette drive.

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