Input and Output Devices Research Paper Example | Topics and Well Written Essays - 750 words

Input and Output Devices - Research Paper Example It can be called as a text based input device, as it allows the user to enter information in the form of alphabets, numbers and other such familiar characters. In addition to these keys, a keyboard also contains special keys such as enter, space bar, function keys, etc which have a specific function assigned to them intended to make user experience easier (COMPUTER ORGANISATION). The mouse can be referred to as the most commonly used pointing device. Instructions are given to the computer by pointing the mouse pointer to a location on the screen by moving the mouse. Common tasks that can be performed by the mouse include positioning the cursor on the screen, moving an icon, and selecting an object. After the onset of graphical user interfaces (GUIs), the mouse has become an indispensable tool in the computer – human interaction. The joystick is a digital device, comprising of a stick that pivots around its base and moves the graphic cursor on the screen according to the motion of the stick. A button serves as a clickable object on the joystick that can be used to select objects to which the graphic cursor is currently pointing to. Joysticks primarily find use as an input device in video games, training simulators and robotic simulations. A light pen is a light sensitive input device, which functions very much like an ordinary pen. It is used to select objects on the screen directly. These find use in computer graphics, animation, computer drawing and for easy selection of options from a menu. By moving the pen, a corresponding trace or sketch can be recorded on the computer. Handwritten notes can be produced by using this device, which can be recognized using OCR technology and converted into computer text form. An output device is a computer peripheral that receives information to the computer and presents it to the user. Generally the output from the computer is displayed visually. A computer monitor displays