Analog computer and Slide rule

Analog computer noun - A computer that represents information by variable quantities (e.g., positions or voltages).

Slide rule and analog computer are semantically related. In some cases you can replace phrase "Slide rule" with "Analog computer", this phrases are similar.

Slide rule noun - Analog computer consisting of a handheld instrument used for rapid calculations; have been replaced by pocket calculators.

Analog computer and slide rule are semantically related. Sometimes you can use "Analog computer" instead a noun phrase "Slide rule".