2
BIOS - The Importance of BIOS BIOS is short for Basic Input/Output System, the builtin software that determines what a computer can do without accessing a program from a disk. It also manages data flow between the computer’s operating system and attached devices, such as hard disk, video adapter, keyboard, mouse and printer. BIOS is very different from common software. It’s similar to hardware. Introduction of BIOS The BIOS is typically placed in a ROM chain that comes with the computer. This ensures that the BIOS will always be available and not be damaged by disk failure. It also makes it possible for a computer to boot itself. The BIOS chain on the motherboard is the only labeled chain. The label can protect BIOS content and cannot be damaged easily. In addition, the BIOS chain is rectangular or square on the motherboard. BIOS primarily can save the following content: selfchecking program, system bootstrap loading program and drives based on external devices. Main Functions of PC BIOS 1. Test the computer hardware and make sure no errors exist before loading the operating system. 2. BIOS driver. Low level drivers that give the computer basic operational control over the computer’s hardware. 3. BIOS or CMOS set up. Configuration program that allows you to configure hardware setting.

BIOS - The Importance of BIOS

Embed Size (px)

DESCRIPTION

BIOS - The Importance of BIOS

Citation preview

Page 1: BIOS - The Importance of BIOS

BIOS - The Importance of BIOS

BIOS is short for Basic Input/Output System, the built‐in software that determines what a computer 

can do without accessing a program from a disk. It also manages data flow between the computer’s 

operating system and attached devices, such as hard disk, video adapter, keyboard, mouse and 

printer. BIOS is very different from common software. It’s similar to hardware. Introduction of BIOS 

The BIOS is typically placed in a ROM chain that comes with the computer. This ensures that the 

BIOS will always be available and not be damaged by disk failure.  It also makes  it possible for a 

computer to boot itself.   

The BIOS chain on the motherboard is the only labeled chain. The label can protect BIOS content 

and  cannot  be  damaged  easily.  In  addition,  the  BIOS  chain  is  rectangular  or  square  on  the 

motherboard.  BIOS  primarily  can  save  the  following  content:  self‐checking  program,  system 

bootstrap loading program and drives based on external devices.   

Main Functions of PC BIOS

1. Test the computer hardware and make sure no errors exist before loading the operating 

system. 

2. BIOS driver. Low level drivers that give the computer basic operational control over the 

computer’s hardware. 

3. BIOS or CMOS set up. Configuration program that allows you to configure hardware 

setting. 

Page 2: BIOS - The Importance of BIOS

4. Self‐checking and initializing. This aspect is responsible to the start of computer, 

including: checking hardware when plugging in., creating interrupt vector, setting 

register, initializing and checking the external devices as well as guiding a program. 

Partition Recovery:

http://www.minitool‐partitionrecovery.com/ 

http://www.minitool‐partitionrecovery.com/products.html 

http://www.minitool‐partitionrecovery.com/minitool‐partition‐wizard.html 

http://www.minitool‐partitionrecovery.com/minitool‐power‐data‐recovery.html