Principle work Alhaswob .. ? Based computer Mbdoaml on three steps. Data entry. The process by which the input data to the device Computer mediated by a unit of input such as plate Keys. Graphics processing . The basic process by the computer as it is vested in unity Almaljh Central , which is the most important unit in Computer Where are data processing in order to reach Information and results required by a specific B.s. . Directed results. Process by which get Almlomat of device Computer -mediated one output Kalshashh the units The printer. Computer uses There are many uses for computers in the world today , which is almost include areas of life replaced, such as education , administration , industry , health , economy, agriculture, telecommunications, space, but it has become in the communities leisured ease some of the burden on the housewife, Fessaadha in some household chores. And make use of computers in education patterns and multiple forms of the simplest computer to be a tool for questions and answers just as the student sitting in front of the screen and begins to receive questions via this screen and answer them using the keyboard in front of him . The student receives a full program includes a series of tutorials and answers at the end of each lesson on a number of questions to include from easy to difficult and at the end of the program computer records the stage reached by the student and the degree to which obtained. And investigating the use of computers in the field of education, a lot of Alfoid for students The student learns self and choose a program that suits him and the right time to learn and walking in the program according to the level and abilities. Has used the computer in the field of management used widely , particularly in the maintenance of information and data on students, staff and users in universities , companies or institutions. And entered the computer fields of science and industry strongly to the extent that it is difficult for us infinite uses in that it is for example used in the design of cars and spaceships and control production lines in factories and schemes buildings large and bridges also use the computer in the military Kaltgm in the paths of missiles and deviate distances and Topah aircraft and submarines.