Switch detection circuit compatible with high and low levels
A switch detection circuit, high and low level technology, applied in the direction of logic circuits with logic functions, etc., can solve the problems of long change cycle, multiple hardware versions, high generation and management costs, and achieve version reduction, cost saving, and interface resources. Effect
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[0019] The present invention will be further described below in conjunction with drawings and embodiments.
[0020] Such as figure 1 with figure 2 As shown, a switch detection circuit compatible with high and low levels includes a detection circuit connected to the switch and a comparator circuit connected to the output terminal of the detection circuit. The comparator circuit expresses the level value signal generated by the detection circuit in binary, The comparator circuit includes a first comparator circuit, a second comparator circuit and a third comparator circuit, the first comparator circuit and the second comparator circuit are connected in parallel to the input end of the third comparator circuit, and the switching value input detection After the circuit, the Vi signal of the level value is generated, and the Vi signal of the generated level value passes through the first comparator circuit and the second comparator circuit respectively, and outputs the switch tru...
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