How a computer works

Somethings about computer

Hard drive

Alternatively referred to as a hard disk drive and abbreviated as Hdor HDD, thehard drive is the computer's main storage media device that permanently stores all data on the computer.

Optical disc drive


In computing, an optical disc drive(ODD) is a disk 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 discs, but recent drives are commonly both readers and recorders, also called burners or writers. Compact discs,DVDs , and Blu-ray discs are common types of optical media which can be read and recorded by such drives. Optical drive is the generic name; drives are usually described as "CD" "DVD", or "Blu-ray", followed by "drive", "writer", etc.

How does a computer monitor work

A monitor is the visual output device connected to the computer tower. It displays picture and images in real time, allowing one to interact with the computer, activating and running its programs at will. There are two primary types of computer monitors, each with their own advantages over the other. A Cathode Ray Tube monitor, or CRT, is cheaper, more durable and able to withstand being damaged and remain functional, and has a better gradation between colors. A Liquid Crystal Display monitor, or LCD, is lighter and more compact, requires less electricity to power, and tends to have better resolution.