push-button
simple mechanism with an area that can be temporarily pushed down to control a device
electric push-button
push-button used to control the flow of current in an electrical circuit
placebo button
push-button or other control which has apparent functionality but has no physical effect when pressed
rotary dial
component that allows dialing numbers
eject button
control button on storage device
turbo button
computer button
Presidential call button
button in the Oval Office used by the president to call aides
Jog
Rotatable knob in consumer devices
soft key
button flexibly programmable to invoke any of a number of functions
Hook flash
telephone signal
mouse button
microswitch on a computer mouse
reset button
button that can reset a device
PlayStation game controller button
push-buttons of PlayStation game controller