A personal computer (PC) is any general-purpose computer whose size, capabilities, and original sales price make 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.
What is Workstation?
A workstation is a high-end microcomputer
designed for technical or scientific applications. Intended primarily
to be used by one person at a time, they are commonly connected to a local area network and run multi-user operating systems.The term workstation has also been used to refer to a mainframe computer terminal or a PC connected to a network.What are Mainframe Computers?
Mainframe computers are powerful computers used primarily by corporate and governmental organizations for critical applications, bulk data processing such as census, industry and consumer statistics, enterprise resource planning, and transaction processing.
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