Which output device creates sound as its primary output?

The buzzer is an output device specifically designed to generate sound as its primary function. It operates by converting electrical energy into acoustic energy, producing a sound when an electrical signal is applied to it. Buzzers are commonly used in various applications, such as alarms, indicators, and notifications, where audible signals are necessary to communicate alerts or information.

In contrast, a motor primarily converts electrical energy into mechanical motion, typically used to drive machinery or move components. A lamp is focused on producing light as its primary output, illuminating a space rather than generating sound. A solenoid functions by converting electrical energy into linear motion, often used in locking mechanisms or other mechanical functions, rather than creating sound. These distinctions highlight why the buzzer is uniquely suited as an output device for sound generation.