4-Bit Comparator

The entity comparator_4bit has two inputs i_a and i_b of type std_logic_vector(3 downto 0) and three outputs o_gt, o_eq, o_lt of type std_logic.

Compares two 4-bit unsigned vectors. o_gt='1' when A>B, o_eq='1' when A=B, o_lt='1' when A<B.