Electronic computer with access to keyboard status information

Details Electronic computer with access to keyboard status information Electronic computer with access to keyboard status information

1981-11-27

1984-07-17

Smith, Jerry

Boots, shoes, and leggings

G06F 1512, G06F 314

Patent

active

044609744

ABSTRACT:
A keyboard-programmable electronic computer utilizes a user-accessible table located in memory to allow the user to list memory addresses to be associated with various key codes corresponding to keys on the keyboard. When a key is depressed upon the keyboard, the computer checks the table for the corresponding key code and, if it is listed therein, the user-written subroutine located in memory at the address associated with the key code is performed. The user-written subroutine has the capability of utilizing both the events of key depression and the status of continued key depressions as program variables.

REFERENCES:
patent: 3855461 (1974-12-01), Stockwell
patent: 4037092 (1977-07-01), Osborne et al.
patent: 4200913 (1980-04-01), Kuhar et al.
patent: 4200926 (1980-04-01), Cochran et al.
patent: 4203152 (1980-05-01), Watson et al.
patent: 4280121 (1981-07-01), Crask
patent: 4291385 (1981-09-01), Osborne et al.

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