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Mainframe

Whether it's a desktop PC or a massive supercomputer, computing power all comes down to the processor.

AP Photo/Jay LaPrete

In the early days of computing, mainframes were huge computers that could fill an entire room or even a whole floor! As the size of computers has diminished while the power has increased, the term mainframe has fallen out of use in favor of enterprise server. You'll still hear the term used, particularly in large companies to describe the huge machines processing millions of transactions every day.

 

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