Personal computers

A personal computer (PC) is a general-purpose computer, whose size, capabilities and original sale price makes it useful for individuals, and which is intended to be operated directly by an end-user with no intervening computer operator. This contrasted with the batch processing or time-sharing models which allowed larger, more expensive minicomputer and mainframe systems to be used by many people, usually at the same time. Large data processing systems require a full-time staff to operate efficiently.

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Two main types:

Desktop model – the system unit sits horizontally on a desk and the monitor is placed on top.

Tower model – the system unit is vertical so can be placed on the floor to save desk space.

 

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