What does operating system actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

The course covers nine areas, with the first six being core operating system functions and the remaining three covering more advanced operating system concepts.

macOS 15 is Apple's upcoming operating system for its Mac computers. It might make me upgrade my MacBook Pro to an M4 chip.

Social media posts have claimed that the COVID-19 vaccine is an “operating system” designed to program humans and hack their biological functions. This is false.