Boots – shoes – and leggings
Patent
1988-09-06
1989-06-20
Chan, Eddie P.
Boots, shoes, and leggings
G06F 1314
Patent
active
048414778
ABSTRACT:
The invention is in a data processing system comprising a data processing device and a data control device, and external abnormal signals inputted through the data processing device are stored by a latch circuit and then outputted as abnormal signals into a microcomputer. The logical sum of the external abnormal signals latched by the latch circuit is taken, and if the logical sum is significant an attention signal to inform generation of the abnormal state is outputted into a central control unit. An OR logic circuit for outputting a control signal to the central control unit is installed so as to take the abnormal signals from the latch circuit. By the external extraordinary signal introducing portion composed of the latch circuit and the OR logic circuit, the external abnormal signals can be processed without interrupting the task of the microcomputer.
REFERENCES:
patent: 3689897 (1972-09-01), Sciuchetti
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patent: 4062059 (1977-12-01), Suzuki et al.
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patent: 4200928 (1980-04-01), Allan et al.
patent: 4404627 (1983-09-01), Marcantonio
patent: 4470111 (1984-09-01), Jenkins et al.
Iwao Morishita, "Guide to Microcomputer (2nd Ed.)", Mar. 16, 1985, pp. 173 and 195-197.
Chan Eddie P.
Kriess Kevin A.
Mitsubishi Denki & Kabushiki Kaisha
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