Special Features:

Requested name - mouse-trak industrial trackball model b-mpind; 192 to 576 pulses per revolution of the ball; 3 input switches; ibm ps/2 interface; 500 rpm max. Ball speed; operating temp. 0 to plus 50 degrees celcius; 6 pin mini-din male connector; compatible with microsoft mouse protocol, logitech mouse protocol

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.