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Comparators belong to the group of arithmetic logic units. Other arithmetic logic units, such as adders, compute binary numbers. However a digital comparator compares binary numbers.

A distinction is made between two types of comparators. The Identity Comparator compares two numbers and determines whether the numbers are identical. A Magnitude Comparator compares two numbers and indicates which number is bigger.

In this first part you learn how to set up the different comparators. In 6 experiments you build comparators as a combination of logic gates. Quickly you realize that with every new bit this requires a lot of effort.

In the second part (Go on...) you are working in another 6 experiments with pre-programmed comparator semiconductor IC's. Here you learn that by cascading you can compare basically infinite binary numbers to compare.

Let's go...and have fun...