Document Type and Number:
Japanese Patent JPS5411215
Kind Code:
B2
Abstract:
A digital encoding keyboard apparatus based on the use of a series of switches arrayed in a matrix configuration is disclosed, together with circuitry for scanning, detecting, shifting, preventing multiple detection, and encoding an output.
Application Number:
JP4192275A
Publication Date:
May 12, 1979
Filing Date:
April 08, 1975
Export Citation:
International Classes:
G06F3/02; H03K17/98; H03M11/02; H03M11/18