Computer BIOS :
BIOS Standards for : Basic input output system.
It is is a ROM chip. It Contains programs that perform the basic functions necessary for the computer to boot and to access the various components.
Short for Basic Input/Output System, the BIOS or 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.
BIOS Standards for : Basic input output system.
It is is a ROM chip. It Contains programs that perform the basic functions necessary for the computer to boot and to access the various components.
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 and 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.
BIOS is primarily associated with the 16-bit, 32-bit, and the beginning of the 64-bit architecture eras, while EFI is used for some newer 32-bit and 64-bit architectures. Today BIOS is primarily used for booting a system and for video initialization (in X.org); but otherwise is not used during the ordinary running of a system, while in early systems (particularly in the 16-bit era), BIOS was used for hardware access – operating systems (notably MS-DOS) would call the BIOS rather than directly accessing the hardware. In the 32-bit era and later, operating systems instead generally directly accessed the hardware using their own device drivers.