Digital computer and Microcomputer

Digital computer noun - A computer that represents information by numerical (binary) digits.

Microcomputer and digital computer are semantically related. In some cases you can replace term "Microcomputer" with "Digital computer", this terms are similar.

Microcomputer noun - A small digital computer based on a microprocessor and designed to be used by one person at a time.

Digital computer and microcomputer are semantically related. Sometimes you can use "Digital computer" instead a noun "Microcomputer".