Question

Design a decimal arithmetic unit with two selection variables, V, and Vand two BCD digits, A and B. The unit should have four arithmetic operation which depend on the values of the selection variables as shown below.

V₁

0

0



V

0

0

1

0

1

Output function

complement of B

complement of B

A + 9's

A+B

A+ 10's

A+1 (add 1 to A)

Answer 1

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