Communications: electrical – Digital comparator systems
Patent
1975-08-13
1976-07-20
Springborn, Harvey E.
Communications: electrical
Digital comparator systems
340324A, G06F 314
Patent
active
039710009
ABSTRACT:
An industrial process control system including a digital computer arranged in a time-share configuration to perform calculations respecting a plurality of process conditions, and to produce corresponding command signals for respective process operators such as valves and the like. The system includes an operator's console unit having a CRT display controlled by a local memory controllable by a keyboard, and by the computer in response to action from the keyboard. Special process-oriented displays can be presented on the CRT, such as fill-in-the-blanks forms into which the operator can insert new values, or other information. The keyboard includes a number of distinctive function keys which serve, in cooperation with the special CRT displays, to present information to the computer for processing, to aid in controlling the process.
REFERENCES:
patent: 3484748 (1969-12-01), Greenbaum et al.
patent: 3579196 (1971-05-01), Gregg, Jr. et al.
patent: 3588838 (1971-06-01), Felcheck
patent: 3603966 (1971-09-01), Gregg, Jr. et al.
patent: 3643219 (1972-02-01), Heimann
patent: 3686639 (1972-08-01), Fletcher
Springborn Harvey E.
The Foxboro Company
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