hardware

     Hardware

-       -The tangible parts of a computer system.

                The classification of hardware 

•  input device
• output device
• CPU
• Secondary Storage

    Input Device - information and instructions of the computer.

Example :

•     keyboard                                    
•     track ball
•     joystick
•      touch screen
•      sensor
•      fax machine
•      mouse
•     scanner
•     video camera/digital camera
•      light pen
•      touch panel
•      touch tone devices

    Output Devices- it consists of devices which communicate the result of processing back to the user by converting electrical signals from the arithmetic/logic unit into a form by a human operator.

  

    Example:

•      monitor
•      speaker
•      printer
•      plotter
•      picture phone
•     computer output micro film