Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki Co Ltd
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Filing date
Publication date
Application filed by Nippon Gakki Co LtdfiledCriticalNippon Gakki Co Ltd
Priority to JP1899577ApriorityCriticalpatent/JPS53104224A/en
Publication of JPS53104224ApublicationCriticalpatent/JPS53104224A/en
PURPOSE: To reduce the number of the pin which connects the keyboard to the switch circuit, by giving a time-division detection for the keying in the time different sequentially according to the keyboard.