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The mainframe was accessible to anyone with access to the personal computers.
Anyone with access to the personal computer might theoretically log on to the mainframe through usage of the personal computer because saving the log-on sequences makes log-on easier.
A mainframe computer, also known as a mainframe or big iron, is a type of computer used primarily by large organizations for crucial applications like processing large amounts of data for tasks like censuses, business and consumer statistics, enterprise resource planning, and transaction processing on a large scale.
A mainframe computer is larger than a supercomputer but smaller than a minicomputer and has more processing capability than several other computer classes such workstations, servers, minicomputers, and personal computers. Although the majority of large-scale computer-system architectures were developed in the 1960s, they are still changing. Servers often employ mainframe computers.
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