NAND Gates circuit design

Consider a digital system which has four inputs. Make a circuit for the system using minimum number of NAND gates only if it gives high output when more than or equal to two inputs are high and otherwise low.

by asdf777
November 13, 2019

1 Answer

Answer by lotron

You need 7 gates. 6 with 2 inputs and 1 with 6 inputs. 6 input NAND is not in program library, but comon product is 6 input NAND gate ie 7430. Not used inputs are commected to H or connected with other input.

+1 vote
by lotron
November 16, 2019

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