1 Bit Comparator Logic Circuit. Recall the 1 bit comparator circuit from your digital logic course. Truth table of 1 bit comparator.
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The truth table for a 1 bit comparator is given below. A comparator that compares two binary numbers each number having 4 bits and produces three outputs based on the relative magnitudes of given binary bits is called a 4 bit magnitude comparator. A b a b a b a b a b a b comparator a b.
Magnitude comparator for 1 bit 2 bit 3 bit 4 bit are discussed in this lecture the expressions for outputs of 1 bit 2 bit 3 bit and 4 bit magnitude comp.
Truth table for 1 bit comparator through the medium of writing the vhdl code for this logic circuit we will understand an application of the case statements. The input bits can be termed as a a3 a2 a1 a0 and b b3 b2 b1 b0. When a0 b0 00 11 both inputs are equal therefore a b output will be high. The circuit of the equality comparator consists of an exclusive nor gate per pair of input bits.
