something that is put in.

the act or process of putting in.

the power or energy supplied to a machine.

the current or voltage applied to an electric or electronic circuit or device. Compare output ( def. 4 ) .

Computers .

data to be entered into a computer for processing.

the process of introducing data into the internal storage of a computer.

contribution of information, ideas, opinions, or the like

Before making a decision we need your input.

the available data for solving a technical problem.

Scot. a monetary contribution, as to charity.

of or pertaining to data or equipment used for input

The keyboard is my computer's main input device.

Computers . to enter (data) into a computer for processing.

to contribute (ideas, information, or suggestions) to a project, discussion, etc.