Button

A button is a switch. Like levers, pressure plates, and tripwire hooks, it sends a redstone signal to adjacent blocks when pressed. However, a button can only be activated by being pressed and will only stay pressed for a short duration. After this, the charge to the object will be lost and the button will pop out, ready to be clicked again. However, with the creation of a T Flip-flop redstone circuit, it can be used as a lever substitute. As of Snapshot 14w04a, buttons can be placed on all faces of a block. Before then, they could only be placed on the sides.

Like any object that gives charges, it must be next to the object receiving the charge (doors, rails, etc.) or connected to it by a length of redstone wire.

Properties
The button is one of five switches currently in the game. As a momentary-contact switch, it can be useful for resetting redstone circuits. The duration that a button is activated when pressed differs between button types, with stone buttons remaining active for 1 second (10 redstone ticks) and wooden buttons for 1.5 seconds (15 redstone ticks). Note that the wooden button can be shot by an arrow to become activated (currently only PC), unlike a stone button which must be physically pressed by hand, and they will stay pressed until the arrow despawns or is retrieved.

When submerged in water, Buttons are destroyed, rather than merely becoming detached, like torches.

Also like torches, buttons can be attached to a chest, dispenser, workbench, or furnace in the same fashion. This is done by placing any solid block above the one you want to place the button on, and right clicking it on the bottom with a button in hand. The button can be placed on any surface on blocks, and will relocate to an available space if placed on a transparent block. This lets you place the button on a block's side without right clicking it. As of 1.4.6, you can also hold Shift, and right click with the button to put it on the desired block without going into its HUD.

Mobs (excluding the player) cannot press buttons by hand, but skeletons may unintentionally trigger wooden buttons when firing arrows. Wooden buttons can also be triggered by arrows fired from a dispenser.

Natural occurrence
Stone buttons can be found naturally in Strongholds right next to iron doors.

History
The pre-1.4.2 crafting recipe for the stone button is imaged below.

Trivia

 * Since buttons have the same texture as the blocks they are produced from, buttons can be placed on those blocks to make 'camouflaged' switches. However, despite this, buttons are popped out from the block in which they are attached to, therefore making this only useful if the subjects are directly across.

Knopf Botón Bouton en pierre Button Stone Button/ko Przycisk Кнопка 按钮