Integrated circuit device testable by an external computer syste

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364579, 364200, G05B 2302, G06F 1130, G06F 1312

Patent

active

047018704

ABSTRACT:
An integrated circuit device for an electronic equipment having an internal bus, the integrated circuit device comprising a plurality of input terminals, a switch circuit connected to the plurality of input terminals for selecting any one of a respective plurality of input signals via the plurality of input terminals, a switch control circuit for controlling the switch circuit to select any one of the input signals in dependence on a selection signal, an analog-to-digital converter for converting the selected input signal from the switch circuit into a corresponding serial digital signal, and a bus interface circuit connected to the internal bus for sending the serial digital signal from the analog-to-digital converter to the internal bus and for sending the selection signal from the internal bus to the switch control circuit.

REFERENCES:
patent: 3854125 (1974-12-01), Ehling et al.
patent: 4155116 (1979-05-01), Tawfik et al.
patent: 4162531 (1979-07-01), Kode et al.
patent: 4253148 (1981-02-01), Johnson et al.
patent: 4315330 (1982-02-01), Brickman et al.
patent: 4371952 (1983-02-01), Schuck
patent: 4402055 (1983-08-01), Lloyd et al.

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