The 4-bit digital output of each of two sensors along an


1. The 4221 code is a base 10-oriented code that assigns the weights 4221 to each of 4 bits in a nibble of data. Design a logic circuit that takes a BCD nibble as input and converts it to its 4221 equivalent. The logic circuit should also report an error in the BCD input if its value exceeds 1001.

2. The 4-bit digital output of each of two sensors along an assembly line conveyor belt is proportional to the number of parts that pass by on the conveyor belt in a 30-s period. Design a logic circuit that reports an error if the outputs of the two sensors differ by more than one part per 30-s period.

b. What is the minimum expression for the function?

c. Realize the function using a 1-of-8 multiplexer.

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Mechanical Engineering: The 4-bit digital output of each of two sensors along an
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