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    Input Devices
                       Games are an example of
                    software. A software is basically
                         a computer program.                                                                                                    The devices that are used to enter data into the computer and give instructions are called
                                                                                                                                                input devices. Some input devices are keyboard and mouse. Now, let us learn about more

                                                                                                                                                input devices.

                                                                                                                                                Keyboard

                                                                                                                                                A keyboard has many buttons that help you type letters, numbers,
                                                                                                                                                symbols and execute various commands.

                                                                                                                                                              Mouse
                                                                                                                                                              A mouse is a pointing device which allows user to select or point on the screen.

                                                                                                                                                Scanner
                                                                                                            Okay! I got it.
                                                                                                                                                A scanner is used to read paper documents, images or pictures and send them

                   Test Your Knowledge                                                      21 st  Century   #Critical Thinking                 as input to the computer. It converts hard copy into soft copy. A scanner can
                                                                                                Skills
                                                                                                                                                be connected to a computer using a USB cable.
                     Write the names of the following devices:
                                                                                                                                                               Joystick
                           a.                           b.                 c.                         d.                                                       A joystick is used to play games on a computer. It helps control the different

                                                                                                                                                               movements or actions in the game.

                                                                                                                                                Microphone

                  A computer works on the IPO (Input-Process-Output)                                                                            A microphone is used to record voice, music and sounds that can be stored on a
                  cycle. It receives input from the user through  input                                                                         computer.
                  devices, processes it using the CPU and gives back the
                  output using output devices. The CPU is the brain of a                                                                                          Web Camera
                  computer. We have learnt about the parts and uses of                                                                                            A web camera is used to take pictures in digital form and store photographs in

                  a computer in our previous classes. Let us learn more about the computer parts.                                                                 the computer.  It is also known  as webcam. It is commonly used for video
                                                                                                                                                                  conferencing.
                  COMPUTER HARDWARE                                                                                                             Light Pen

                  The  parts  of  a  computer  that  we  can  see  and  touch  are  called  Hardware.  All  input,                              A light pen is used to point to objects or draw on the screen in a way like a
                  processing,  output  and  storage  devices  form  the  hardware  components  of  a  computer                                  touch screen. It is used to draw text and diagrams on the monitor.
                  system. Hardware devices of                                        Hardware
                  a  computer system can be

                  internal  as  well  as  external  to                                                                                                             If CPU is the brain of a computer, then which computer hardware is its ear?
                  the computer system.                      Input      Processing     Output        Storage       Hybrid
                                                           Devices       Device       Devices       Devices       Devices

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