Introducing Computers
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18 terms
Terms | Definitions |
|---|---|
 computer | is an electronic device that receives data (input), processes data, stores data, and produces a result (output) |
| supercomputers | the largest and fastest computers |
| mainframe computers | smaller and less powerful than a supercomputer, but bigger than a pc |
| minicomputers | larger than a pc with the same capabilities but companies might choose minicomputers if they have many users and large amounts of data |
| microcomputers | personal computer used at home |
| computer system | is a combination of several parts working together |
| hardware | the tangible, physical equipment that can be seen and touched |
| software | set of instructions that tells the computer what to do |
| data | new facts entered into the computer to be processed |
| people | the users of the computers who enter the data and use the output |
| data communications | the transmission of text, numeric, voice, or video data from one machine to another |
| sender | the computer that is sending the message |
| receiver | the computer that is receiving the message |
| Channel | how (telephone wire, coaxial cable, or fiber optic) |
| Protocol | rules governing the orderly transfer |
| network | connects one computer to another or to peripheral devices (printers, scanners, etc) |
| Local Area Network (LAN) | network located relatively close to each other |
| Wide Area Network (WAN) | connects LANs over a larger area |
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