Combinational Logic Word Problems

BCD to7 Segment Display Controller

Multilevel Implementation

X = C' + D'

Y = B' C'

C0 = C3 + A' B X' + A D Y

C1 = Y + A' C5' + C' D' C6

C2 = C5 + A' B' D + A' C D

C3 = C4 + B D C5 + A' B' X'

C4 = D' Y + A' C D'

C5 = C' C4 + A Y + A' B X

C6 = A C4 + C C5 + C4' C5 + A' B' C

52 literals

33 gates

Ineffective use of don't cares

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