COMPUTER FUNDAMENTALS

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: -ROM contains the programming that allows a computer to start up or regenerate each time it is turned on. ROM also performs large input/output (I/O) tasks and protects programs or software instructions.

Detailed explanation-4: -When we think of personal computers, the first notable OS in ROM was the Intertec Superbrain, with “Phantom Boot” CP/M. Essentially an instant boot at the cost of a frozen snapshot.

Detailed explanation-5: -ROM is memory whose contents are “written” when the semiconductor is masked during fabrication. IOW the code is permanent for the life of the chip. Since the contents of ROM cannot be changed, and an OS is rarely ever bug-free and therefore requires updates, don’t expect to find an OS image stored in ROM.