BIOS (basic input output system)

Subyek: BIOS (basic input output system) Thu Sep 10, 2009 7:54 am

BIOS

Short for Basic Input/Output System, BIOS is a chip located on all computer motherboards that contains instructions and setup for how your system should boot and how it operates. To the right is a picture of what a BIOS chip may look like in your computer.
The BIOS includes instructions on how to load basic computer hardware and includes a test referred to as a POST (Power On Self Test) that helps verify the computer meets requirements to boot up properly. If the computer does not pass the POST, you will receive a combination of beeps indicating what is malfunctioning within the computer.
In most PCs, the BIOS has 4 main functions:

POST - Test computer hardware, ensuring hardware is properly functioning before starting process of loading operating system. Additional information on the POST can be found on our POST / Beep Codes page.

Bootstrap Loader - Process of locating the operating system. If capable operating system located, BIOS will pass the control to it.

BIOS - Software / Drivers that interface between the operating system and your hardware. When running DOS or Windows you are using complete BIOS support.

BIOS / CMOS Setup - Configuration program that allows you to configure hardware settings including system settings such as computer passwords, time, and date.

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