FUNDAMENTALS OF COMPUTER

COMPUTER HARDWARE COMPONENTS FUNCTIONS

COMPUTER SYSTEM COMPONENTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of these contains instructions used by the CPU when a computer is booting up?
A
Hard Disk Drive
B
RAM
C
ROM
D
None of the above
Explanation: 

Detailed explanation-1: -The BIOS (Basic Input Output System) is an example of a program that is stored in ROM. The BIOS runs as soon as the computer is switched on. It checks that the hardware is functioning correctly then loads the computer’s operating system. Because the BIOS is always needed it is stored in ROM.

Detailed explanation-2: -The BIOS is actually stored in read only memory (ROM). So, the bootloader program opens or wakes up the BIOS, which then finds the complete loading instructions on a bootable device, typically the hard disk. BIOS is low-level system software that boots before your operating system when you start your computer.

Detailed explanation-3: -A ROM stores instructions that are needed to start/boot up a computer.

Detailed explanation-4: -ROM is Read Only Memory. It is used to store data/instructions that need not/can not/should not be ever modified (or rarely modified, you can update your BIOS because it is modifiable, but it is rarely done).

Detailed explanation-5: -ROM is non-volatile storage, which means the information is maintained even if the component loses power. ROM is located on a BIOS chip which is plugged into the motherboard. ROM plays a critical part in booting up or starting up, your computer.

There is 1 question to complete.