Question: Design a combinational circuit with 4 inputs that represent a decimal digit in BCD and 4 outputs that produce the 9s complement of the input

Design a combinational circuit with 4 inputs that represent a decimal digit in BCD and 4 outputs that produce the 9s complement of the input digit. The six unused combinations can be treated as dont-care conditions. Note: Do not use K-maps!

a. Provide the truth table for the combinational circuit. b. Write the Boolean expression for each output as a SOP, and then

use Boolean algebra theorems to simplify it.

c. Obtain logic diagram for each output.

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