Multi-function key input device
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United States of America Patent
Stats
-
Dec 5, 1989
Issued Date -
N/A
app pub date -
Mar 15, 1988
filing date -
Nov 14, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A multi-function key input device having a touch panel serving as a key input means, which is operated separately according to different operational modes to display different symbols or matters with the aid of a central processing section, a memory section, a digital shift register and LCD drivers operating a liquid crystal device.
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Cited Art Landscape
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