COMPUTER FUNDAMENTALS

Detailed explanation-1: -The first thing a computer has to do when it is turned on is to start up a special program called an operating system. The operating system’s job is to help other computer programs work by handling the messy details of controlling the computer’s hardware.

Detailed explanation-2: -The CPU starts and fetches instructions into RAM from the BIOS, which is stored in the ROM. The BIOS starts the monitor and keyboard, and does some basic checks to make sure the computer is working properly. For example, it will look for the RAM. The BIOS then starts the boot sequence.

Detailed explanation-3: -When the computer is turned on, the operating system will be loaded from the hard drive into the computer’s memory, thus making it available for use. The process of loading the operating system into memory is called bootstrapping, or booting the system.

Detailed explanation-4: -Booting is a startup sequence that starts the operating system of a computer when it is turned on. A boot sequence is the initial set of operations that the computer performs when it is switched on.