Page 9 - TP_Modular_V2.1_Class3
P. 9

01




                    01                                                     A COMPUTER SYSTEM














                                      Your Aim

                                      to learn about:

                                              Hardware                         Software
                                               How Does a Computer Work?


                 A computer is an electronic machine. It is made up of various devices like keyboard,
                 mouse, monitor and CPU. These devices help you to enter the data (input) through
                 keyboard or mouse, process the data using CPU and display the results (output)
                 on the monitor or printer.

                     HARDWARE

                 All the physical components of a computer system are called hardware. These are

                 the parts which we can see or touch. Hardware devices are further classified as shown:


                                                              Hardware




                           Input           Processing          Output             Storage            Hybrid
                          devices            device            devices            devices           devices

                 Input Devices


                 A computer accepts data and instructions through input devices. Some of the
                 input devices are keyboard, mouse, scanner, joystick, microphone, etc.
                 Keyboard

                 A  keyboard is used to enter  words,  numbers and

                 special characters.
                                  Mouse                                                         Keyboard

                                  A mouse is a pointing device that inputs data by pointing, clicking
                                  and dragging.
                  Keyboard
                                                                                        A Computer System         7
   4   5   6   7   8   9   10   11   12   13   14