Keyboard with replaceable cursor control means

Details Keyboard with replaceable cursor control means Keyboard with replaceable cursor control means

1996-10-21

1999-03-23

Wu, Xiao

Computer graphics processing and selective visual display system

Display peripheral interface input device

Including keyboard

345157, 345167, 345173, G09G 500

Patent

active

058866868

ABSTRACT:
A keyboard having an open chamber in a wrist rest thereof adapted for receiving a track ball and a touch input device alternatively, permitting the track ball or touch signal device to be electrically connected to the internal circuit of the keyboard for signal input. A packing block is provided for mounting in the open chamber of the wrist rest in a flush manner when the track ball and the touch input device are not used.

REFERENCES:
patent: 5021771 (1991-06-01), Lackman
patent: 5049863 (1991-09-01), Oka
patent: 5126723 (1992-06-01), Long et al.
patent: 5301132 (1994-04-01), Lakahane
patent: 5416479 (1995-05-01), Jondrow et al.
patent: 5416498 (1995-05-01), Grant
patent: 5428355 (1995-06-01), Jondrow et al.
patent: 5528523 (1996-06-01), Yoshida
patent: 5546334 (1996-08-01), Hsieh et al.
patent: 5594617 (1997-01-01), Foster et al.

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