MCQ Detailed View

A hard disk is a secondary storage device used to store data permanently in a computer. Unlike primary memory (such as RAM and ROM), which is limited and often temporary, a hard disk provides long-term data storage even when the computer is turned off. It is commonly used to save operating systems, software applications, documents, videos, images, and other personal or system files.

Secondary storage is designed to hold data that does not need to be accessed instantly by the processor. While it is slower than primary memory, it offers much more space and helps keep important files safe for future use.