Scan-controlled keyboard

Details Scan-controlled keyboard Scan-controlled keyboard

G - Physics

06

F

354/236.51

G06F 3/02 (2006.01) G06F 3/033 (2006.01) H03K 17/98 (2006.01) H03M 11/20 (2006.01)

Patent

CA 1155963

Abstract of the Disclosure A keyboard having a matrix arrangement of analog key- switches arranged along column conductors leading from a driver chip and row conductors leading to a detector chip. The driver chip has a strobe line and multiple address lines adapted to connect to a controller. The column conductors are sequentially pulsed by the driver chip. The detector chip has a strobe line common to that of the driver chip and a multiple line data bus for directing keyboard signals simultaneously from the several row columns.

369101

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