Alphanumeric keyboard having identification capability

Details Alphanumeric keyboard having identification capability Alphanumeric keyboard having identification capability

1981-07-22

1984-07-10

Groody, James J.

Communications: electrical

Audible indication

Percussion-type sound producer

340365S, 340365E, G06F 302

Patent

active

044595816

ABSTRACT:
An alphanumeric keyboard having the capability to identify the language supported by the keyboard and the mode of keyboard operation. A switch component having a plurality of individually settable switch elements is connected to the keyboard control logic via bidirectional lines which are used by the control logic as excitation lines during key scanning and as sense lines during switch component monitoring. The keyboard control logic, in response to a request from the terminal associated with the keyboard, changes from a key scanning mode to a switch component sampling mode. The positions of the switch elements are supplied to the terminal over a serial data line to identify keyboard characteristics.

REFERENCES:
patent: 4107784 (1978-08-01), Van Bremmelen
patent: 4124843 (1978-11-01), Bramson et al.
"Electronic Translator Fits in Your Pocket", The Washington Star, Nov. 1978, P. C-6.

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