| A | B |
|---|
| Hardware | The physical parts or devices that make up a computer system. |
| A device | a single item of hardware. |
| keyboard | an input device consisting of a set of buttons or keys marked with characters. |
| graphics tablet | an input devicewhich allows free drawing using a hand held pointer on a board. |
| touch-sensitve screens | a screen with sensitve areas on it. The user presses perticular areas to input into the computer, such as a palm top |
| A mouse | An input device with a ball undernaeath and one or more buttons- used to control a pointer on the screen |
| trackball | An input device with a ball which is turned by hand, moving a cursor on a screen, works like an upside down mouse. |
| joysticks | An input device consisting of a handle and or more buttons usually used for controlling game |
| scanner | an input device which allows printed text or graphics to be displayedon the screen. |
| Infra red mouse | A mouse without wires which transmits its pposition using infra red |
