Updated: 04/26/2017 by Computer Hope

A system may refer to any of the following:

1. When referring to a computer, system or system unit is used to distinguish the complete computer. See our computer definition for full information about a computer.

2. When referring to an Apple Macintosh, System is the computer's operating system, or macOS. System is commonly followed by a number, for example, System 7.

  • Additional information about Macintosh operating systems can be found on our macOS overview.

2. In Windows Vista, Windows 7, and Windows 8 system refers to the System Properties.

4. When referring to software, system is sometimes used to abbreviate operating system.

Apple terms, IS, Macintosh, Operating system terms, System Properties