Software: OS, applications, programming

Software: this is what makes the system functional. There are two types: system and application.

System software – runs the hardware. In other words, this forms the background which gets everything up and running - and all the hardware speaking to each other.

Application software – runs on top of the system, does something – i.e. word processing, spreadsheets, GIS, etc…


Programming languages

Their purpose is to write code which will do something. This could be an extension to an operating system, a new application, or a modification to either.

Often, more than one program will be used. For example, I have seen people write serious number crunching code in C++, then write a VB (or python) interface that calls the C++ code.