Answer:
a smartphone ringing
Explanation:
An output device is a computer hardware that converts data or signals into readable form like text, graphic, audio, video, tactile. Example of output devices are monitor, speaker, printer, projector. A smartphone ringing is a computer hardware because it converts the information into readable form in the form of sound.
Input devices is a computer hardware that sends information to the computer for interaction and control. Examples are mouse, keyboard, fingerprint sensor, scanner e.t.c.
