Question: Show all steps Design a combinational circuit that detects an error in the representation of a decimal digit in bcd (8-4-2-1) in other words ,

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Design a combinational circuit that detects an error in the representation of a decimal digit in bcd (8-4-2-1) in other words , the output is equal to 1 when the inputs contain any of the six unused but combinations in the bcd code. Using nand gates only

Start with a truth table

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