COMPUTER SCIENCE AND ENGINEERING
OPERATING SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Windows
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BIOS-ROM instructions
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Mac OS
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Binary
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Detailed explanation-1: -A computer’s basic input/output system (BIOS) is a program that’s stored in nonvolatile memory such as read-only memory (ROM) or flash memory, making it firmware. The BIOS (sometimes called ROM BIOS) is always the first program that executes when a computer is powered up.
Detailed explanation-2: -The “operating system” of a computer is like a first, supervisory program that begins running when the computer first starts up ("boots up"). The operating system plays an invisible administrative and bookkeeping role behind the scenes.
Detailed explanation-3: -The Power On Self Test is the first task the BIOS performs when the computer is powered on. At the time of the POST, the BIOS verifies that the computer’s architecture can complete the initialization procedure. The system will typically produce a beep if the POST is executed correctly.
Detailed explanation-4: -The principal job of a computer’s BIOS is to govern the early stages of the startup process, ensuring that the operating system is correctly loaded into memory. BIOS is vital to the operation of most modern computers, and knowing some facts about it could help you troubleshoot issues with your machine.