Question: a. 9's complement is used to subtract a binary-coded decimal (BCD) digit using addition. 9's complement is the subtraction of the BCD digit from

a. 9's complement is used to subtract a binary-coded decimal (BCD) digit using addition. 9's complement is

a. 9's complement is used to subtract a binary-coded decimal (BCD) digit using addition. 9's complement is the subtraction of the BCD digit from 9. For example, 9's complement of 7 is 9-7-2. Design 9's complement circuit using truth table and implement it in VHDL. [10 Marks] b. Construct a BCD subtractor circuit using 9's complement by using a diagram. Use suitable example to discuss the operation of BCD subtractor

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