Pushbuttons are mechanical or electrical switches that are actuated by being pushed or depressed by a user's finger or any other physical means. These buttons are designed to instantly complete or interrupt an electrical circuit to initiate a specific action or function. They find widespread use in various devices and systems, providing a convenient and user-friendly interface for controlling or operating different functionalities.
Pushbuttons typically consist of a spring-loaded button or switch mechanism that, when pressed, creates a connection between two or more conductive elements. This action closes an electrical circuit, allowing current to flow through the system. As a result, a specific command is executed, such as turning a device on or off, selecting a particular mode or setting, or triggering an alarm or alert.
Pushbuttons come in different forms, including momentary and latching types. Momentary pushbuttons maintain the connection only as long as they are actively pressed, reverting to their default state when released. On the other hand, latching pushbuttons retain their status even after being released and require another press to change their state. This enables them to function as on/off switches or toggles.
These buttons are found in a wide range of applications, from simple devices like handheld electronics and appliances to complex systems like industrial machinery, computer interfaces, transportation controls, and safety devices. Their versatility and ease of use make pushbuttons an integral part of everyday technology.
The word "pushbutton" is a compound word formed by combining "push" and "button".
"Push" originated from the Middle English word "pusshen" which meant to thrust or exert pressure. It can be traced back to the Old French word "pousser" meaning "to push" or "to jostle". The verb "push" has Germanic origins and is related to the Old Norse word "pyla" meaning "to thrust" or "to poke".
"Button" comes from the Old French word "boton" or "bouton" which meant a bud, a shoot, or a button. It is also derived from the Latin word "bottō", meaning "knob" or "projection". The Latin word itself is believed to have originated from the Gaulish word "buta", with the same meaning.