COMPUTER

     
         A computer is a machine  which is designed to help us in all aspect of life. This machine looks very clever because it can work very fast and can finish great amount of work in a relatively short time .
the first computer was made in bletchlly , herdforshire,england. it was called kolosus. It was the biggest computer ever made by man. The complete set of this machine filled a big room . The function of this machine was to work with numbers.
        The numbers were used in code during the war between england and germany in 1942. Within 40 years it size ha sbecome smaller and smaller. A modern computer does not use any electronic tube but uses microchips. The invention of microchips in 1970 did not only make computer become very small but very cheap as well. a pocket calculator is kind of a simple computer.
        A computer consists of the hardware and the software is all the system of the computer. If you attend a computer course you will learn the computer's software. The whole work of a computer is done by the keyboard as the input unit, the central processing unit and the output unit which is represented the monitor or the screen and the printer.
       You type some data on keyboard .your data will be sent to and kept by the memory. If you need the data to be procesed you must push the relevant keyboard and the result or the output can be seen on the monitor. This output can also be printed by the printer.
      nowdays we can find  computers every where. they are loyal  servants of men . it is men's brain which designs their exciting works. without men computer is just as helpless as the other machine