BIOS, the firmware that starts a computer, stands for:
- A.Basic Internal Output Software
- B.Binary Input Output System
- C.Basic Input Output System
- D.Basic Integrated Operating System
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The BIOS is held in a read only memory chip on the motherboard; when the machine is switched on it tests the hardware through the power-on self test and then loads the operating system from the disc into main memory, a process called booting.
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