Video computer terminal with detachable intelligent keyboard...

G - Physics – 06 – F

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354/236.2

G06F 3/153 (2006.01) G06F 3/02 (2006.01) G06F 15/20 (1980.01)

Patent

CA 1169160

VIDEO COMPUTER TERMINAL WITH DETACHABLE INTELLIGENT KEYBOARD MODULE Abstract of the Disclosure An interchangeable keyboard application module is con- nected to a video monitor module in a computer terminal to provide sequences of processor instructions and a keyboard for performing a plurality of selectable applications. The video monitor module includes a CRT display, a serial I/O interface and a processor that processes characters received through the serial I/O interface for display on the CRT screen whether or not the application module is connected. The processor in the video monitor module detects the con- nection of the application module, and then selects its instructions from a memory in the application module first, to prompt the selection of a mode of operation for the ter- minal, and second, to execute the selected mode of operation. The application module uses a plurality of keyboard overlays, each corresponding to a respective mode of operation. In a specific embodiment two of the modes of operation are pro- gramming applications related to programmable controllers.

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