mainframe

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mainframe

a large-scale COMPUTER with big data-storage facilities which is often accessible simultaneously from many terminals. Mainframe computers are used by large data-processing departments in businesses for sales and purchase ledger record-keeping, etc.

As MICROCOMPUTERS and MINICOMPUTERS become more powerful in terms of data-processing, speed and data-storage capacity, the distinction between the three types of computer has become blurred.

References in periodicals archive ?
Refusing to supply its operating systems to end-user customers who choose to purchase PSI's IBM-compatible mainframe computer systems;
The device uses an ESCON adapter to communicate with IBM-compatible mainframes.
FastComm Communications Corporation (OTC BB: FSCX) today announced that the ChanlComm(R) 7790 Communications Controller is ready for its commercial debut in the IBM and IBM-compatible mainframe marketplace.
EMC's performance in the third quarter also reflected stronger-than-anticipated revenues in the IBM-compatible mainframe storage market during what is traditionally a seasonally weaker quarter.