Understanding information technology in its latest forms invites us to know the foundations of this technology The main key has been unanimously recognized that high technology is incorporated in most Computers are complete and efficient, so we need to know more about what they are, their types and their developments And how it works, its advantages and reasons for attention and what are its uses 3-1-1 Definition of the computer: Computer, electronic computer, computer, electronic and known spirit in trade In the name of the computer are all the labels that are given on a single device, known by the Arabic encyclopedia of the terms Library, information and computing "ie a machine that does three things: o Accept entries in modular environments o Process and process entries according to specific rules o Present results as he outputs and these outputs are in the form of data or signals Electric can automatically control the operation and manipulation of certain machines or other processes 1 The data is performed automatically and without any human intervention during operation. . Dr. Abd al-Latif Soufi knows it as an electron device that receives DATA data then transmits this program to a program 2 It finally comes in the form of results, answers or solutions.