Each concept here is mapped to its prerequisites — the ideas you'd need first to understand it — all the way down to four foundations: Space, Time, Energy, Pattern. Click any prerequisite to drill down, or scroll for the chain graph.
Input is a signal that is transmitted into a system or device, leveraging the understanding of software and systems, resulting in a change in the state or condition of the system.
External reference — all senses of the word “input” on Wiktionary. This atlas concept maps to only the slice of meaning relevant to the prerequisite graph.