The *Portable Personal Computer* ([IBM 5150][1]), or PC, was a computer model from IBM first sold in 1981. North American company [IBM Corp.][2] has been the leading actor in enterprise and administration computing hardware and software for decades up to the 80s', precisely and ironically until the PC advent they largely accelerated.

[![enter image description here][3]][3]  

Large, expensive and delicate computers of this time were generally rented, not sold, and put in the hands of highly qualified technicians, still in 1980. This has been a very profitable business for decades, the golden times. So affordable computers for small businesses and wealthy individuals was quite a big event. It created the whole new era we know. You can read about the story [here][4].

[![enter image description here][5]][5]  
<sup>The first Portable Personal Computer for less than $1,600, 1982. [Source][6]</sup>

It was made possible by the vulgarization of highly integrated circuits, collectively known as [microprocessors][7], and specifically CPUs, for [central processing units][8], microprocessor flavors optimized to execute programmed operations.

Around the world small computers are called by different names, referring to some of their aspects which directly derive from this story:

- *Individual computer* is probably the most correct name, as a personal computer is a computer designed to be used by a single person at once (it is not a [time-sharing computer][9] used by enterprises, now split into two separate categories: Mainframes and servers).
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[![enter image description here][10]][10]  
<sup>Ad for individual computer tables. [Source][11]</sup>

- *PC* is a kind of super-family for all individual computers designed from IBM specifications used to build PC, PC-XT and PC-AT models. PC specifications were later updated by [PS/2 specifications][12], the ones by which the latest IBM personal computer was designed, but *PC-compatible* was kept for marketing continuity. For years, 80 or 90% of the units sold were PC-compatible units. The remaining 10 or 20% were mostly [Osborne][13], Apple and a myriad of other proprietary systems.

- Apple systems, IIe, Macintosh, vibrant iMacs, PowerBook or MacBook for the main ones, are just called like this (e.g. a *Mac*) in spite Apple progressively adopted many of the PC specifications, including [x86 CPUs][14], the largest design difference until then. For this reason, it's not unusual now to refer to personal computers of any sort as PC with different OSes. This is the same than for smartphones which are managed either by iOS or by Android, there is no big differences between all these devices.
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[![enter image description here][15]][15]  
<sup>Ad for a game which works on all PCs, regardless of the OS</sup>
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(Contrary to a well fed legend, MacOS isn't in anyway original. Steve Jobs, fired by its board in 1985, in need of an OS for his new company ([NeXT][16]) [reused Unix][17], a [product created by telephone companies AT&T and Bell][18], under the name of OSX. In 1997 Apple, close to bankruptcy, recall Jobs and OSX becomes MacOS with the success we know.)

- In the country I live, first individual computers were sold early: [Micral][19], like *micro-* sold in 1973, [Portal][20], like *portable*, first laptop in 1980. Because the names were kind of set prior to IBM PC and Apple product existence, we largely use the neutral word *microcomputer* (microordinateur), often shortened into *micro*. This refers to the microprocessing unit the device is based on, and this truly isolate them from mainframes, the industry computers. Less often one can say PCs or Macs.

With the arrival of laptops, the naming conventions have been even more blurred. While *laptop* is the Anglo-Saxon name invented by [Compaq][22], the leading manufacturer of laptops when they were introduced, most people in France call them *portable computers* ("ordinateurs portables") or just *portables" or still *microcomputers*. PCs is most often used in the office context, but just as many other words from the Anglo-Saxon business language (manager, B2B, subcontractor, telco, open space, ...).


  [1]: https://en.wikipedia.org/wiki/IBM_Personal_Computer
  [2]: https://en.wikipedia.org/wiki/IBM
  [3]: https://i.sstatic.net/Win1G.png
  [4]: https://www.ibm.com/ibm/history/ibm100/us/en/icons/personalcomputer/
  [5]: https://i.sstatic.net/Ib9hy.jpg
  [6]: https://interface-experience.org/site/wp-content/uploads/2015/01/IE-IBM-PC-2.jpg
  [7]: https://en.wikipedia.org/wiki/Microprocessor
  [8]: https://en.wikipedia.org/wiki/Central_processing_unit
  [9]: https://en.wikipedia.org/wiki/Time-sharing
  [10]: https://i.sstatic.net/USr26.jpg
  [11]: https://www.kindercraftproducts.com/computer_suite_furniture.php
  [12]: https://en.wikipedia.org/wiki/IBM_PS/2
  [13]: https://en.wikipedia.org/wiki/Osborne_Computer_Corporation
  [14]: https://en.wikipedia.org/wiki/Mac_transition_to_Intel_processors
  [15]: https://i.sstatic.net/Fqywm.png
  [16]: https://en.wikipedia.org/wiki/NeXT
  [17]: https://www.howtogeek.com/441599/is-macos-unix-and-what-does-that-mean/
  [18]: https://en.wikipedia.org/wiki/Unix
  [19]: https://en.wikipedia.org/wiki/Micral
  [20]: https://en.wikipedia.org/wiki/Portal_(computer)
  [21]: https://en.wiktionary.org/wiki/mac#French
  [22]: https://en.wikipedia.org/wiki/Compaq