The Mainframe Story
One common impression of a mainframe's user interface is the 80x24-character "green screen" terminal, named for the old cathode ray tube (CRT) monitors from years ago that glowed green. In reality, mainframe interfaces today look much the same as those for personal computers. When a business application is accessed through a Web browser, there is often a mainframe computer performing crucial functions behind the scenes.
Now a days, people around the world connect to the Mainframe Computer, remotely over internet, from their work-place or home using a PC running a software that pretends to be a dumb-terminal. You don't have to sit physically near a Mainframe CPU to do your work.
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