Bulletin board system and Digital computer

Bulletin board system noun - A computer that is running software that allows users to leave messages and access information of general interest.

Digital computer and bulletin board system are semantically related. In some cases you can use "Digital computer" instead a noun phrase "Bulletin board system".

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

Bulletin board system and digital computer are semantically related. Sometimes you can replace phrase "Bulletin board system" with "Digital computer", this phrases are similar.