Microprocessor-based keyboard/display unit for configuring contr

Details Microprocessor-based keyboard/display unit for configuring contr Microprocessor-based keyboard/display unit for configuring contr

1981-01-23

1984-02-14

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340365VL, 340717, 340721, 34082522, G09G 300

Patent

active

044319886

ABSTRACT:
A microprocessor-based keyboard/display is described in which the function of the keys can be varied automatically depending on the instrument to which the keyboard/display is connected. The keyboard/display comprises a microprocessor, a read only memory in which is stored an operating program for the microprocessor, a keyboard having a plurality of keys, a display, and means for connecting said microprocessor to another instrument. In accordance with the invention, the program stored in said read only memory is responsive to a signal from the instrument to which said keyboard/display is connected whereby upon receipt of a signal from one type of instrument at said keyboard/display at least some of said keys of said keyboard are given first functions and upon receipt of a signal from a second type of instrument said keys are given different functions. Further in accordance with the invention, the keyboard/display comprises a random access memory in which may be stored data derived from one instrument to which said keyboard/display is connected and from which may be read data from said keyboard/display. Advantageously, the keyboard/display can be used with a recorder to provide for print out of the data stored in the random access memory of the keyboard/display.

REFERENCES:
patent: 3879722 (1975-04-01), Knowlton
patent: 4001807 (1977-01-01), Dallimonti
patent: 4107784 (1978-08-01), Van Bemmelin
patent: 4303973 (1981-12-01), Williamson, Jr. et al.
Programmable Keytop Employing Electrochromic Display, Jones IBM Tech. Discl. Bull., vol. 21, No. 4, 9/78, pp. 1671-1672.

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