Editing Buzzer (section)

{{Short description|Audio signalling device}}
{{Other uses}}
A '''buzzer''' or '''beeper''' is an [[Sound|audio]] signaling device,<ref>{{cite web|url=http://www.thefreedictionary.com/buzzer |title=buzzer - definition of buzzer by The Free Dictionary |access-date=22 May 2015}}</ref> which may be [[Machine|mechanical]], [[Electromechanics|electromechanical]], or [[Piezoelectricity|piezoelectric]] (''piezo'' for short). Typical uses of buzzers and beepers include [[alarm devices]], [[timer]]s, [[train]] and confirmation of user input such as a mouse click or keystroke.