Special Features:

Inclosure type: partially enclosed; power source: self-contained; mounting method: surface; reference data, 1a5a3, ti-6350.18, fa 9971, pg 8-62, vol 3, sec 4-11

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.