Computer

                    The terms "computer" is derived from the Latin word "computare" this means to calculate. Now a days we define computer as an electronic device, which takes raw data as input from the user and process these data under the control of instructions and gives the result (output). If the output is useful in future then also we can save it and use it and use it later.

                      The working principal of computer us classified in to three ways firstly Input secondly Process and thirdly Output cycle. In input we have to put data from the different device of computer such as Mouse, Keyboard, Scanner, Digital camera, Web camera, Joysticks, Lights pen, Touch pen, BCR/OCR/

MICR etc.And after input data from this device secondly there must be process it is unseen it used to work from the device CPU, ALU+CU. And lastly the result or out put must be seen. It can be distracted/achieve from the device monitor, printer, plotter. the working way of computer is like our digestive system.