Human–machine interaction

means by which a user interacts with and controls a machine

physical device used to control another device remotely (often wirelessly)

thumb|upright=1.4|Electrical switches. Top, left to right: circuit breaker, mercury switch, wafer switch, [[DIP switch, surface mount switch, reed switch. Bottom, left to right: wall switch (U.S. style), miniature toggle switch, in‑line switch, push-button switch, rocker switch, microswitch.]]

robot resembling a human, or in other uses specifically a human

part of a computer UI that indicates the position (textual or graphical) that operations will affect

type of steering control in vehicles and vessels (ships and boats)

275px|thumb|A modern claw hammer with [[rubber-coated handle]] thumb|A tsuka-maki covered sword handle

musical instrument component

type of percussion mallet

A push-button (also spelled pushbutton) or simply button is a simple switch mechanism to control some aspect of a machine or a process. Buttons are typically made out of hard material, usually plastic or metal. The surface is usually flat or shaped to accommodate the human finger or hand, so as to be easily depressed or pushed. Buttons are most often biased switches, although many un-biased buttons (due to their physical nature) still require a spring to return to their un-pushed state.

electrical switch used to transmit text messages in Morse code

musical keyboard played with the feet, usually used for low-pitched notes

handle for a firearm, drill, or other tool

individual key on a keyboard musical instrument

rotating control mechanism