Multi-programmed data processing system with facility for inspec

Details Multi-programmed data processing system with facility for inspec Multi-programmed data processing system with facility for inspec

1985-10-21

1987-12-15

Harkcom, Gary V.

Communications: electrical

Land vehicle alarms or indicators

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

364900, 340724, 340721, 340712, G06F 314

Patent

active

047136561

ABSTRACT:
A data processing system that can execute a plurality of programs concurrently and has a display screen for displaying data associated with any one of the programs. Each program maintains display screen data indicating the current status of the program. The system maintains a REVIEW menu containing a list of the programs that have display screen data available. When a REVIEW key is pressed, the REVIEW menu is displayed. By pressing a further key, one of the listed programs can then be selected, and its display screen data is displayed on the screen. When the key is released, the information that was being displayed prior to operation of the REVIEW key is restored to the screen. A RESUME menu lists programs that are currently in a background mode, and can be called up by pressing a RESUME key, allowing one of those programs to be put into a foreground mode in which it has access to the screen. Another menu lists programs that are available for execution and can be called up by pressing a START key, allowing one to be selected for execution.

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patent: 4611306 (1986-09-01), Crehan et al.
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Macintosh User's Manual, 1983, pp. 13-41, 54-75, 87-90, 99-108.

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