Summary

Computer systems use various types of storage to store and retrieve data. Three main types are optical, magnetic, and solid-state storage.

Optical storage: Uses lasers to read and write data on optical discs. An example is a DVD, which can store movies or software. Scenario: A singer saves songs on a CD to share it with their fans without internet access. Optical storage is less popular these days than it used to be.

Magnetic storage: Utilises magnetism to store and access data. An example is a hard disk drive (HDD) found in most computers. Scenario: A gamer installs their favorite video game on an HDD, enabling quick loading and smooth gameplay.

Solid-state storage: Employs microchips to store data without moving parts, like a USB flash drive. Scenario: A photographer saves high-resolution pictures on a portable SSD for easy transfer and backup.

Each storage type has its advantages and applications, ensuring data remains safe and easily accessible in computer systems.