Easy 4-bit magnitude comparator circuit

74HC/HCT85 are easy way for 4-bit magnitude comparator circuit

The 74HC/HCT85 are 4-bit magnitude comparators that can be
expanded to almost any length. They perform comparison of
two 4-bit binary, BCD or other monotonic codes and present the
three possible magnitude results at the outputs (QA>B, QA=B and
QA

FUNCTION TABLE