FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -The operating system is stored on the hard disk, but to speed up the whole process, the OS is copied into RAM on start-up. This is completed by BIOS (Basic Input Output System).

Detailed explanation-2: -The hard drive (sometimes called the hard disk) is the main storage device in your computer. Like RAM, it can be added to and changed, and like ROM it is non-volatile, but it is slow. If you have files and folders on your computer, are stored on the hard drive. The operating system is also stored on the hard drive.

Detailed explanation-3: -RAM is used to hold data and instructions that are currently in use. In a modern PC, RAM is used to hold the operating system and any open documents and programs that are running. RAM can be read from and written to.

Detailed explanation-4: -There are two main types of RAM: Dynamic RAM (DRAM) and Static RAM (SRAM). DRAM (pronounced DEE-RAM), is widely used as a computer’s main memory. Each DRAM memory cell is made up of a transistor and a capacitor within an integrated circuit, and a data bit is stored in the capacitor.