How a Computor works / The History

By Kacey Campion. 7T3

Hard Drive (HDD)/SSD

HDD is a disk drive used to read and write hard disk. they are mostly used for storage on a computer. However any kind of SSD that appears to the system as a disk drive. SSDs are more expensive that the same capacity of magnetic disk but have much shorter access time.

Big image

Optical Drive

An optical disk reads or writes optical media eg: Compact disks, DVD's and blue ray disks. At least one such drive is commonly installed in most personal computer to allow them to play and/or record audio and video media and load and store data such as program installers.

Big image


Digital monitors are sometimes known as TTL because the voltages on the red, green and blue inputs are compatible with TTL logic chips. The monitors variable may only be accessed by its access procedures and only one process may be actively accessing the monitor at any one time. This is a monitor...
Big image


CPU also known as Central Processing Unit. This is the part of a computer that controls all the other parts. The control Unit fetching instructions from memory and decodes them to produce signals which control the other parts of the computer.
Big image


A RAM is a data storage device for which the order of access to different locations does not affect the speed of access.In the 1970s magnetic core memory was used and some old-timers still call RAM "core".
Big image


In a personal computer, the motherboard contains the bus, the microprossesor, and integrated circuits used for controlling any built-in peripherals such as the keyboards, text and graphics display, serial ports and parallel ports, joystick, and mouse interface.
Big image