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Cyril Endfield: Portable word-processor. Microwriter, LeBlanc Nolan Shur & Nies, November 23, 1982: US04360892 (63 worldwide citation)

Disclosed herein is a portable word-processor comprising the following components; a micro-processor and, connected thereto, a manually operable input chord keyboard having four finger keys and at least one thumb key, the micro-processor being programmed to respond to signals produced by operation o ...


2
Cyril Endfield: Portable word-processor. Microwriter, LeBland Nolan Shur & Nies, April 10, 1984: US04442506 (42 worldwide citation)

A portable word-processor comprising the following components; a microprocessor and, connected thereto, a manually operable input chord keyboard having four finger keys and at least one thumb key, the microprocessor being programmed to respond to signals produced by operation of a chord of a combina ...


3
Cyril Endfield, Christopher J Rainey: Keyboard. Microwriter, LeBlanc Nolan Shur & Nies, April 17, 1984: US04443789 (22 worldwide citation)

Disclosed herein is an electrical keyboard having five keys arranged conveniently for the fingers of an operators hand, a memory to store the signals from each key, logic circuit to instruct said stored data after release of the last of said keys and an encoder to receive said stored signals and pro ...


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