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Video Card

                                              A Video card, also known as a graphic card. It is used to convert
                                              digital data  into  video format  and  vice-versa.  After  converting  the
                                              digital data into a video, it displays the output on a display device such
                                              as a monitor or TV. Video card is also used to improve the quality of
                         Video Card           pictures and videos. It has processing as well as storage capabilities.
                  External Hardware Components

                  The hardware components located  outside the CPU box are  called  external hardware
                  components. As these components are connected to the computer externally, they are also called
                  peripheral components. External hardware components can be classified into three categories:

                                                   External Hardware Components






                     Input Devices             Output Devices            Storage Devices             Hybrid Devices

                  Let us discuss these in detail.
                  Input Devices

                  A computer accepts data and instructions through input devices. Data can be in the form of
                  numbers, text, sound or graphics. Some of the input devices are:

                      Keyboard: A keyboard is the primary input device for
                     a  computer.  Similar to  an  old  typewriter,  a  keyboard
                     consists of buttons called keys. By pressing these keys,
                     you can input data in the form of words and numbers.
                                                                                           Keyboard
                    A standard keyboard has 104 keys, which can be classified
                     as follows:

                   •  Alphanumeric Keys: A-Z, a-z, 0-9
                    •  Control Keys: Ctrl, Alt, Esc, etc.
                    •  Function Keys: F1-F12

                    •  Special Keys: Caps Lock, Backspace, Spacebar, Arrow keys, Home, End, etc.
                    •  Punctuation Keys: “ ”  -  ‘  ;  , etc.

                      Mouse: It is a pointing device that allows data to be input into
                     a computer  using commands such as  point,  click, and  drag. It
                     controls the pointer’s movement on the screen. It is used to move
                     and select icons, files, and folders on your computer. There are two
                     main types of mice: optical and mechanical.
                    An optical mouse is an advanced computer pointing device that
                     uses a Light Emitting Diode (LED) and an optical sensor. This type
                     of mouse does not require internal cleaning since it has no rotating            Optical Mouse
                     parts; however, dust can accumulate near the light emitter over time.

                  10     Touchpad iPRIME (Ver. 2.2)–VII
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