Push-button

Push buttonbuttonbuttonskeysbutton pressbutton/joystickbuttonboardcontrol buttonde-bouncedfire button
A push-button (also spelled pushbutton) or simply button is a simple switch mechanism to control some aspect of a machine or a process.wikipedia
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Switch

switchestoggle switchcontact bounce
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 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.
In a switch where the contacts remain in one state unless actuated, such as a push-button switch, the contacts can either be normally open (abbreviated "n.o." or "no") until closed by operation of the switch, or normally closed ("n.c." or "nc") and opened by the switch action.

Calculator

pocket calculatorcalculatorselectronic calculator
The "push-button" has been utilized in calculators, push-button telephones, kitchen appliances, and various other mechanical and electronic devices, home and commercial.
Electronic calculators contain a keyboard with buttons for digits and arithmetical operations; some even contain "00" and "000" buttons to make larger or smaller numbers easier to enter.

Computer keyboard

keyboardkeyboardsalphanumeric keyboard
A computer keyboard is a typewriter-style device which uses an arrangement of buttons or keys to act as mechanical levers or electronic switches.

Button (computing)

buttonbuttonsonscreen button
In computing, the term button (sometimes known as a command button or push button) refers to any graphical control element that provides the user a simple way to trigger an event, like searching for a query at a search engine, or to interact with dialog boxes, like confirming an action.

Button accordion

buttonmusetteaccordion
A button accordion is a type of accordion on which the melody-side keyboard consists of a series of buttons rather than piano-style keys of a piano accordion.

Placebo button

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A placebo button is a push-button or other control which has apparent functionality but has no physical effect when pressed.

Reset button

reset keyresetresets
In electronics and technology, a reset button is a button that can reset a device.

Turbo button

turboAuto-fireautofire
On personal computers, the turbo button is a button which provides two run states for the computer: normal speed or an enhanced "turbo" speed.

Shutter button

shutter release
In photography, the shutter-release button (sometimes just shutter release or shutter button) is a push-button found on many cameras, used to record photographs.

Machine

machinerymechanicalmachines
A push-button (also spelled pushbutton) or simply button is a simple switch mechanism to control some aspect of a machine or a process.

Process (engineering)

processprocessesmaterials processing
A push-button (also spelled pushbutton) or simply button is a simple switch mechanism to control some aspect of a machine or a process.

Plastic

plasticsadditivesadditive
Buttons are typically made out of hard material, usually plastic or metal.

Metal

metalsmetal ionsmetal ion
Buttons are typically made out of hard material, usually plastic or metal.

Spring (device)

springspringsspring-loaded
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.

Push-button telephone

10- or 12-button touch-tone telephonespush-buttonpush-button dialing
The "push-button" has been utilized in calculators, push-button telephones, kitchen appliances, and various other mechanical and electronic devices, home and commercial.

Home appliance

home appliancesappliancesappliance
The "push-button" has been utilized in calculators, push-button telephones, kitchen appliances, and various other mechanical and electronic devices, home and commercial.

Electrical network

circuitelectrical circuitelectric circuit
This method of linkage is used in simple manual operations in which the machine or process has no electrical circuits for control.

Kill switch

emergency stopBig Red ButtonKillswitch
These pushbuttons are called emergency stop buttons and for increased safety are mandated by the electrical code in many jurisdictions.

Glove

glovesmittenleather gloves
This large mushroom shape can also be found in buttons for use with operators who need to wear gloves for their work and could not actuate a regular flush-mounted push button.

End user

end-userend-usersend users
As an aid for operators and users in industrial or commercial applications, a pilot light is commonly added to draw the attention of the user and to provide feedback if the button is pushed.

Pilot light

pilot flamepilot lightspilot
As an aid for operators and users in industrial or commercial applications, a pilot light is commonly added to draw the attention of the user and to provide feedback if the button is pushed.

Feedback

feedback loopfeedback loopsfeedback control
As an aid for operators and users in industrial or commercial applications, a pilot light is commonly added to draw the attention of the user and to provide feedback if the button is pushed.

Lens

lensesconvex lensoptical lens
Typically this light is included into the center of the pushbutton and a lens replaces the pushbutton hard center disk.

Error

gaffegaffesmistake
To avoid an operator from pushing the wrong button in error, pushbuttons are often color-coded to associate them with their function.

Color code

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To avoid an operator from pushing the wrong button in error, pushbuttons are often color-coded to associate them with their function.