ECE/Comp Sci 352 - Digital System Fundamentals - Semester ...

Figure 1. BCD Calculator Figure 2. Top Level Design ... add 0 0 BCD Addition: S = A + B + CIN sub 0 1 BCD Subtraction: S = A + 9’s Comp(B) + CIN comp10s 1 0 BCD 10’s Complement of A: S = 9’s Comp(A) + CIN ... The correction flip-flop corr is used to indicate that a ten's complement of the contents of ACC_R is to be taken and the sign of ... ................
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