BIOS stands for Basic Input / Output System. BIOS is a program code of the first run when the computer starts up (booting). The main function of BIOS is to identify andrecognize the computer hardware. Usually the BIOS is stored in ROM {Read Only Memory) that exist on the motherboard of a computer.
When the computer starts, the BIOS will attempt to identify computer parts below:
• clock generator.
• processors and caches.
• chipset (memory controller and I / O controller).
• system memory.
• All PCI devices
• primary graphics controller.
• Mass storage controllers SATA and IDE controllers fseperti).
• Various I / O controllers (Such a keyboard / mouse and USB).
Once identified, the BIOS will call the program to boot an operating system bootloader {).
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