Cursor positioning device operable over various degrees of eleva

Details Cursor positioning device operable over various degrees of eleva Cursor positioning device operable over various degrees of eleva

1993-04-16

1995-05-09

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

345167, G01V 904

Patent

active

RE0349313

ABSTRACT:
The present invention relates to cursor control devices for computers, and particularly relates to cursor control devices for personal computers which involve the use of a ball rotatable by the fingers for controlling cursor movement.

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