Input may refer to any of the following:
1. Any information or data that is sent to a computer for processing is considered input. Input or user input is sent to a computer using an input device. The picture is an illustration of the difference between input and output. The input example (top) shows data being sent from a keyboard to a computer.
Input device examples
Devices commonly used to provide input to a computer include:
Input vs. Output
Computer software can receive data in the form of an input stream, which is a flowing sequence of data that can be directed to specific functions. The directed channel in which the data stream flows is known as a pipeline, and changing its direction is known as piping.
2. In general, input can also refer to a contribution of feedback, information, or work. For example, someone may ask you for your input about a project they have undertaken at work or school.