A touch sensitive display screen that uses a clear panel over or on the screen surface. The panel is a matrix of cells, an input device, that transmits pressure information to the software.
An interactive visual display device with which the user interacts by touching the screen to select options from a displayed menu. Touch screens work by sensing the position of the finger using infrared sensors located in the screen surround.
An input device used to simplify user input and response. The user touches the screen to control the output, working with menus or multiple-choice decision points. Allows some simulation of hands-on training; for example, pointing to parts on a machine.