Input/Output Device Functions

Input/Output Device Functions

1. Touch Screen

   • INPUT + OUTPUT
   • Used widely in mobile phones, tablet Pc's and smart boards. Used as an input device by tapping screen/gesture control. Output device - viewing the display.

2. Keyboard

   • INPUT
   • Commonly used data entry method - user presses a key and a code is entered into the computer. Speciality keyboards are used in restaurants where each order in the menu is pressed as a separate key to take an order.

3. Pointing devices mouse

   • INPUT
   • A mouse is the most popular pointing and selection device used in computing; touchpads and trackballs are other types of pointing devices that are used on laptops/netbooks.

4. Microphone

   • INPUT
   • Microphones are used to input sound into a computer system, often used in videoconferencing and voice recognition software.

5. Barcode Scanner

   • INPUT
   • Barcode readers are used to input data automatically from barcodes. The barcode reader scans the barcode using a visible red light, which is then used to identify the details of a product.

6. Joystick/games controller

   • INPUT
   • Joysticks are used to play computer by games by controlling the way the character moves on screen; it can also be used to control devices such as a wheelchair.