Special Features:

Keyboard alone: 350* 150*63 mm (wxhxd); trackball alone: 100*150*60mm (wxhxd); keyboard with trackball: 450*150*63mm (wxhxd); power supply: keyboard electronics: 5v-dc+/-10%, approximately 60ma; trackball electronics: 5v-dc+/-10%, approximately 30ma; backlight + audio: 12v-dc+/-10% approximately 1.2a; psu for 12v: 85..260v-ac 50..60hz, approximately 20w.

Properties:

A device which includes a sphere mounted in a small open-topped box. The sphere is hand-operated by rotating it in a backward, a forward, or a sideway direction while maintaining the device in a fixed location. The movement of the sphere generates a signal which may be used to move a cursor and/or tracking symbol on the face of a display, such as a cathode ray tube; to input data into an electronic system; and/or to control the operation of a system. It may or may not include additional input devices, such as switches or variable resistors.