What is a Digital Comparator?
What is a Digital Comparator?
Digital Comparator Definition
A digital comparator is defined as a circuit that compares two binary numbers and indicates whether one is greater, equal, or smaller than the other.
Single-Bit Digital Comparator
Compares two single-bit binary numbers and provides outputs for greater, equal, and smaller conditions.
Multi-Bit Digital Comparator
Extends comparison to multi-bit binary numbers, often using a 4-bit comparator as a basic building block.
Working Principle
The comparator evaluates each bit, starting from the most significant, to determine the output condition. The following examples can be explained：
G = 1 (logically 1) when A > B.
B = 1 (logically 1) when A = B.
And
L = 1 (logically 1) when A < B.
IC 7485
A 4-bit digital comparator IC that can be cascaded for comparing larger binary numbers, with specific input and output terminals for seamless integration.
