Definition of 'mainframe'

Noun

1. a large digital computer serving 100-400 users and occupying a special air-conditioned room
      Synonyms: mainframe computer
2. (computer science) the part of a computer (a microprocessor chip) that does most of the data processing; "the CPU and the memory form the central part of a computer to which the peripherals are attached"
      Synonyms: central processing unit CPU C.P.U. central processor processor

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