PDA having chord keyboard input device and method of providing d

Details PDA having chord keyboard input device and method of providing d PDA having chord keyboard input device and method of providing d

1993-12-09

1996-05-07

Mai, Tan V.

Boots, shoes, and leggings

3647081, G06F 300, G06F 100

Patent

active

055153054

ABSTRACT:
Disclosed are a personal digital assistant ("PDA") and a method of providing data to the PDA. The PDA includes: (1) a chassis having first and second noncoplanar surfaces thereon and containing computer processing circuitry therein, (2) a visual display located on one of the first and second surfaces, the visual display coupled to the circuitry to allow the circuitry to drive the visual display and (3) a plurality of momentary keys located on both of the first and second surfaces and coupled to the circuitry, the plurality cooperating to form a chord keyboard to thereby allow multiple ones of the plurality to be depressed at a time to form a chord, the circuitry interpreting the chord as a single keystroke.

REFERENCES:
patent: 4042777 (1977-08-01), Bequaert et al.
patent: 4491049 (1985-01-01), Mizuta et al.
patent: 5017030 (1991-05-01), Crewes
patent: 5189416 (1993-02-01), Estes

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