Question: A circuit with four inputs examines the binary code applied to its inputs to see if it is a legal BCD code (i.e. 1001).

A circuit with four inputs examines the binary code applied to its inputs to see if it is a legal BCD code

A circuit with four inputs examines the binary code applied to its inputs to see if it is a legal BCD code (i.e. 1001). Assume that the desired output for a valid BCD code is a "1" and for an invalid BCD code is a "0". Design the circuit that indicates whether the 4 bit binary input is a BCD code or not by using 8-to-1 line multiplexer and XOR gates. i) ii) Obtain the truth table of the circuit. Realize the circuit in Proteus program using 74151 multiplexer and 7486 XOR gate. (Hint: Remember that XOR gates can be used as INVERTER).

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