1. Personal computer: A small, single-user computer based on a microprocessor.
2. Workstation: A powerful, single-user computer. A workstation is like a personal computer, but it has a more powerful microprocessor and, in general, a higher-quality monitor.
3. Minicomputer: A multi-user computer capable of supporting up to hundreds of users simultaneously.
4. Mainframe: A powerful multi-user computer capable of supporting many hundreds or thousands of users simultaneously.
5. Supercomputer: An extremely fast computer that can perform hundreds of millions of instructions per second.
1) Computer is made of electronic components so it is referred to as electronic device.
2) Computer has no intelligence until software is loaded.
3) There are five elements of computer system: hardware, software, people, diskettes and data.
4) The manner in which computers are connected is the connectivity.
5) Without software instructions hardware doesn't know what to do.
BUYING A COMPUTER
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