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    Fundamental functions of a computer (Fig 7)          Let’s say you want to print a letter, you type the letter with
                                                                the help of a keyboard, the CPU makes it ready to print
           A computer takes input from the user and processes it
           to give the desired output. You can give inputs to the   and the printer prints it. Here the keyboard is the input
           computer, the computer processes the inputs and gives   device and the printer is the output device.
           the output.
            Fig 7

           Input devices                                        •  Smart Phone: A  smart  phone  does  need  a  new
           Keyboard, Mouse, Microphone(Mic), Camera, Joystick      introduction as you already know. A Smartphone is
                                                                   a mini computer as it takes input from the user and
           and scanner are some Input devices of a computer.
                                                                   gives the output. It is smaller in size when compared
           These devices are designed to take inputs from the user.   to a tablet computer.
           These input devices are connected to the computer.
                                                                Uses of computer
           Output devices
                                                                •  If  you  want  to  learn  anything, You  can  search  in
           Monitor screen, Printer, Speakers, Headphones, Projector   a  search  engine  like  google,  bing..   To  know  the
           are the output devices. These are also connected to the   complete information with the help of a computer.
           computer with the help of a wire or a wireless connection.   •  You can play computer games like online and offline
           These devices show/give the required information.
                                                                   games.
           Different types of computer
                                                                •  You can listen to music on a computer.
           •  Desktop computer: A Computer which is kept on a   •  You can watch a movie on the computer with friends
              desk or a table is called a Desktop computer. It usually   and family.
              doesn’t have a power backup and always needs a
              power supply.                                     •  You can do many things with the help of computers
           •  Laptop: A Laptop is smaller than a desktop computer.   like painting a picture, writing letters and Emails,  book
                                                                   travel tickets and rooms, order food online
              It is portable and easy to carry. It usually has a battery
              backup.                                           •  You can make designs of your choice by using CAD,
                                                                   PHOTOSHOP and CORALDRAW.
           •  Tablet: It is more commonly called a Tablet in recent
              times. It is also a type of computer, smaller than a
              laptop.

           20                 H & C: Hand Embroidery Artisan : (NSQF - 2024) R.T. Ex.No 1.3.12

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