Terminology

"PC" is an initialism for "personal computer". The IBM Personal Computer incorporated the designation in its model name, but IBM has not used this brand for many years. It is sometimes useful, especially in a marketing context, to distinguish personal computers of the "IBM Personal Computer" family from personal computers made by other manufacturers. For example, "PC" is used in contrast with "Mac", an Apple Macintosh computer.[3][4][5][6] This sense of the word is used in the Get a Mac advertisement campaign that ran between 2006 and 2009, as well as its rival, I'm a PC campaign, that appeared in 2008. Since none of these Apple products were mainframes or time-sharing systems, they were all "personal computers" and not "PC" (brand) computers.