|Input is the term denoting either an entrance or changes which are inserted into a system and which activate/modify a process. It is an abstract concept, used in the modeling, system(s) design and system(s) exploitation. It is usually connected with other terms, e.g., input field, input variable, input parameter, input value, input signal, input port, input device and input file (file format). Input may refer to:
* Advice (opinion), an opinion or recommendation offered as a guide to action, conduct.
* Information, any data entered into a computer or data processing system, see input output
* The act of entering data into a computer or data processing system (see Input/output).
* Input device, any peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system (such as a computer)
* Stimulus (physiology), a detectable change in the environment that influences an activity of an organism
* Power consumption, an amount of power used by a system.
* International Public Television Screening Conference, an international public television organization
* In economics, a factor of production, a resource employed to produce goods and services.