Terminology




"PC" is an initialism for "personal computer". The IBM Personal Computer incorporated the designation in its model name, but the term evolved to refer to computers of any brand. In some contexts, "PC" is used to differentiate contrast with "Mac", an Apple Macintosh computer. Since none of these Apple products were mainframes or time-sharing systems, they were all "personal computers" and not "PC" (brand) computers.

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32)Described: What to expect on Republic Moment 2021and what not to

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History

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The "brain" computer may one day come down to our level of the common people and help with our income-tax and book-keeping calculations. But this is speculation and there is no sign of it so far. —  British newspaper The Star in a June 1949 news article about the EDSAC computer, long before the era of the personal computers. In the history of computing, early experimental machines could be operated by a single attendant. For example, ENIAC which became operational in 1946 could be run by a single, albeit highly trained, person. This mode pre-dated the batch programming, or time-sharing modes with multiple users connected through terminals to mainframe computers. Computers intended for laboratory, instrumentation, or engineering purposes were built, and could be operated by one person in an interactive fashion. Examples include such systems as the Bendix G15 and LGP-30 of 1956, and the Soviet MIR series of computers developed from 1965 to 1969. citation needed By the early
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Hardware

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Computer hardware is a comprehensive term for all physical and tangible parts of a computer, as distinguished from the data it contains or operates on, and the software that provides instructions for the hardware to accomplish tasks. Some sub-systems of a personal computer may contain processors that run a fixed program, or firmware, such as a keyboard controller. Firmware usually is not changed by the end user of the personal computer. Most 2010s-era computers only require users to plug in the power supply, monitor, and other cables. A typical desktop computer consists of a computer case (or "tower"), a metal chassis that holds the power supply, motherboard, hard disk drive, and often an optical disc drive. Most towers have empty space where users can add additional components. External devices such as a computer monitor or visual display unit, keyboard, and a pointing device (mouse) are usually found in a personal computer. The motherboard connects all processor, memory and
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