Today is the computer age. Every thing in our lives are based on computers, from toys to appliances to cars and houses. The computer age began In the late nineteen seventy’s with a small handful of people who wanted to see how far they could go. The first computers were huge. A single computer would fill a whole room. Now they fit in the palm of your hand or in your back pocket, they are thirty times faster and they store more memory.

• Mainframes are big computers usually used in large organizations, usually used for processing large amounts of information. Ex. Financial transactions in a large bank

• Dumb terminal is a monitor and keyboard. The dumb terminal has no processor, it is connected to a mainframe witch runs the terminal.

• A Supercomputer is a mainframe capable of very high volume and very fast processing.

• A Minicomputer is a midsized computer widely used in universities, research labs, and smaller corporations.

• A workstation is a desktop computer powerful enough to rival the performance of a minicomputer or, in some cases, of a small mainframe.

• A network is a means b which computers are connected with one another so that they can share data

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