Posts

Showing posts with the label Trackball

Computer input device | input device | tech blog |

Image
  COMPUTER INPUT DEVICE Keyboard Keyboard is the most common and very popular input device which helps to input data to the computer. The layout of the keyboard is like that of a traditional typewriter although there are some additional keys provided for performing additional functions.   Keyboards are of two sizes 84 key or 101/102 keys, but now keyboards with 104 keys or 108 keys are also available for windows and the internet S.NO. Keys & description 1 Typing keys These keys include the letter keys (a-Z) and digit keys (09) which generally give the same layout as that of typewriters . 2 Numeric keyboard It is used to enter the numeric data or cursor movement. Generally, it consists of a set of   17 keys that are laid out in the same configuration used by most adding machines and calculators. 3 Function keys The twelve function key are present on the...