Software and Hardware
If you use a player piano as an analogy, the piano can be thought of as the hardware and the roll of music as the software.
The software a series of very simple computer instructions carefully organized to complete complex tasks. These instructions are written in programming languages (like BASIC, PASCAL, C...) to help simplify the development of applications.
The hardware is what sits on your desk and executes the software instructions. The player piano is useless unless the roll of music has been written correctly.
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