Matrix type keyboard scans positioning circuit

The utility model provides a matrix type keyboard scans positioning circuit comprises matrix type keyboard, buffer register, state code register, encoder. The circuit scans via clock pulse, and the location of will operate the single bond, the state operation being maintain in key combination operat...

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Bibliographic Details
Main Authors Nie Hui, Chen Gang, Ling Yun, Zeng Hongbing, Wen Dingdu, Wang Bing
Format Patent
LanguageChinese
English
Published 17.08.2016
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:The utility model provides a matrix type keyboard scans positioning circuit comprises matrix type keyboard, buffer register, state code register, encoder. The circuit scans via clock pulse, and the location of will operate the single bond, the state operation being maintain in key combination operation, keyboard converts active state sign indicating number and the invalid state sign indicating number of same binary system length to, invalid key that effective key that encoder output and each active state sign indicating number correspond number or export corresponds with all invalid state sign indicating numbers number, different single bond operation, key combination operation, keyboards is kept the state operation and is only embodied not the same at the status codes, the keyboard scanning circuit structure need not modifyd to if necessary increase/decrease keys operating function or adjustment button operating function, and it can only to need to change the encoder according to the corresponding relation b
Bibliography:Application Number: CN2016205881U