How a Computer Works

and many parts

hard drive

A hard drive is the computers main storage that permanently stores all data on the computer. this was first introduced on September the 13th 1956.

optical drive

In the real world, "optical" refers to vision, or the ability to see. In the computer world, however, "optical" refers to lasers, which can see and read data on optical discs.


A computer monitor is an electronic device that shows pictures. Monitors often look similar to televisions. The main difference between a monitor and a television is that a monitor does not have a television tuner to change channels. Monitors often have higher display resolution than televisions.


A CPU is the central processing unit. this is where all the calculations are made. It is located inside the computer case on the motherboard.


A motherboard is the main printed circuit board (PCB) found in computers and other expandable systems. This is situated at the bottom of the computer case.


RAM is a computer storage location that allows information to be stored and accessed quickly from random locations within dram on a memory module. Because information is accessed randomly instead of sequentially like it is on a CD or hard drive, the computer can access the data much faster

input and outputs

Inputs and Outputs is the communication between an information processing system and the outside world, possibly a human or another information processing system.

touch screens

A touch screen is a computer display screen that is also an input device. The screens are sensitive to pressure; a user interacts with the computer by touching pictures or words on the screen.

operating systems

The operating system is one of the most important program that runs on a computer. Every general-purpose computer must have an operating system to run other programs. Operating systems perform basic tasks, such as recognizing input from the keyboard, sending outputs to the display screen, keeping track of files and several others.

operating system

An operating system is a software program that enables the computer hardware to communicate and operate with the computer software

Tim Berners-Lee

Tim Berners-Lee is an English computer scientist, best known as the inventor of the World Wide Web he was born on June 8, 1955 and he is British. he invented the world wide web 1989 while working as a software engineer at CERN, the large particle physics laboratory near Geneva, Switzerland.

Alan Turing

Alan Turing was a British mathematician, logician, cryptanalyst, philosopher, pioneering computer scientist, mathematical biologist, and marathon and ultra distance runner.He was born on June 23, 1912, Maida vale, London and died on June 7, 1954, Wilmslow

the four generations of computers

Each generation increases in reliability, speed, efficiency and ease of use and decreases in cost & size. The first Generation (1945 - 1955), The Second Generation (1955 - 1965) ,The Third Generation (1965 - 1980) and finally The Fourth Generation (1980 . . . )