4. Write a brief note on mainframe computers.

1.	4. Write a brief note on mainframe computers.
Answer» <p>Mainframe computersormainframes(colloquially referred to as "big iron")[1]arecomputersused primarily by large organizations for critical applications; bulk data processing, such ascensus, industry and consumer statistics,enterprise resource planning; andtransaction processing. They are larger and have more processing power than some other classes of computers:minicomputers,servers,workstations, andpersonal computers.</p><p>The term originally referred to the large cabinets called "main frames" that housed thecentral processing unitand mainmemoryof early computers.[2][3]Later, the term was used to distinguish high-end commercial machines from less powerful units.[4]Most large-scale computer system architectures were established in the 1960s, but continue to evolve. Mainframe computers are often used as servers.</p>

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