How a computer works

hard drive

A hard drive is the main storage media device that permanently stores all data on the computer. A hard drive is the main/heart of the computer.

touch screens

a display device which allows the user to interact with a computer by touching areas on the screen.

optical drive

is a disc drive that uses laser light or electromagnetic waves within or near the visible light spectrum as part of the process of reading or writing data to or from optical discs. Some drives can only read from disc.