Input is the term denoting either an entrance or changes which are inserted into a system

System

System is a set of interacting or interdependent components forming an integrated whole....

 and which activate/modify a process

Process (engineering)

In engineering a process is a set of interrelated tasks that, together, transform inputs into outputs. These tasks may be carried out by people, nature, or machines using resources; so an engineering process must be considered in the context of the agents carrying out the tasks, and the resource...

. 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

Input device

In computing, an input device is any peripheral used to provide data and control signals to an information processing system such as a computer or other information appliance...

 and input file (file format

File format

A file format is a particular way that information is encoded for storage in a computer file.Since a disk drive, or indeed any computer storage, can store only bits, the computer must have some way of converting information to 0s and 1s and vice-versa. There are different kinds of formats for...

).

Input may refer to:

• Advice (opinion)
  Advice (opinion)
  Advice is a form of relating personal or institutional opinions, belief systems, values, recommendations or guidance about certain situations relayed in some context to another person, group or party often offered as a guide to action and/or conduct...
  
  , an opinion or recommendation offered as a guide to action, conduct.
• Information
  Information
  Information in its most restricted technical sense is a message or collection of messages that consists of an ordered sequence of symbols, or it is the meaning that can be interpreted from such a message or collection of messages. Information can be recorded or transmitted. It can be recorded as...
  
  , 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/output
  In computing, input/output, or I/O, refers to the communication between an information processing system , and the outside world, possibly a human, or another information processing system. Inputs are the signals or data received by the system, and outputs are the signals or data sent from it...
  
  ).
• Input device
  Input device
  In computing, an input device is any peripheral used to provide data and control signals to an information processing system such as a computer or other information appliance...
  
  , 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)
  Stimulus (physiology)
  In physiology, a stimulus is a detectable change in the internal or external environment. The ability of an organism or organ to respond to external stimuli is called sensitivity....
  
  , 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.

External links

• Definitions of input by the freedictionary.