Switching circuits
Concept 11 of 11 in Mathematical Logic
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A circuit uses six switches: S1S_1S1 in series with a block of S2S_2S2, S3S_3S3 in parallel, and in parallel with all that, S3′S_3'S3′, S2′S_2'S2′, S1S_1S1 in series. Can fewer switches light the lamp in exactly the same cases?
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