In computing the BOIS stands for Basic Input Output System, this refers to the firmware code which is run by the computer when it is first powered on; this is a type of boot loader.
The functions of the BIOS are used to identify and initialize the system components, such as the hardware devices including video display card, hard disk and floppy disk.
This is to prepare the machine into a known low capability slate, so that the other software programs stored on various media can be loaded and executed.
The BIOS machines can also be said to be a coded program embedded on a chip that recognizes and controls devices which make up the computer, and control the peripherals.
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