Analog computer and Computing device

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

Computing device and analog computer are semantically related. In some cases you can use "Computing device" instead a noun phrase "Analog computer".

Computing device noun - A machine for performing calculations automatically.

Analog computer and computing device are semantically related. Sometimes you can replace phrase "Analog computer" with "Computing device", this phrases are similar.