Software is the programs that are run on computer hardware. There are two different types of software: systems software and applications software. The CPU and the fetch-execute cycle Learn about ...

For years, the term "open systems" (plural) referred to the Unix world because Unix ran in more types of computer hardware than any other operating system (combined with Linux, it still does).

The parts that make up a computer are called hardware. Programs which tell a computer what to do are called software. The hardware needs the software to tell it what to do. Inside the computer ...