A CDE Definition
micro to mainframe
(1) Using a desktop computer as a terminal to a mainframe. See 3270 emulator.
(2) An earlier expression that referred to all sizes of computers from small to large.
A plug-in board that turns a desktop computer into an IBM mainframe terminal. The first 3270 emulator was the Irma board from Attachmate Corporation. The board is sometimes called a "coax adapter" because of its coaxial cable connection to the IBM cluster controller.
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