As noted above, software includes both the operating system

The operating system (sometimes abbreviated as OS) is the main software running on a computer and will dictate a great deal about what hardware will work and what software is available to run on any p [..]

Mobile devices run operating systems as well: Apple's iOS

Earlier versions of PCs ran command-line operating systems like DOS

Apple has made Swift

Programs generally refer to the software applications that can be installed onto a computer or device, although it can also refer to the utilities that come preinstalled with an operating system like [..]

You'll probably run into the term 32-bit and 64-bit

A network is a collection of computers connected either via network cables (a LAN

The network adapter

When you buy a program or a hardware device it will usually have a set of specifications that indicate what operating system it is designed for as well as the minimum