Design example: two-bit comparator (cont)

LT = A' B' D + A' C + B' C D

EQ = A' B' C' D' + A' B C' D + A B C D + A B' C D'

= (A xnor C) • (B xnor D)

GT = B C' D' + A C' + A B D'

K-map for EQ

K-map for LT

K-map for GT

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