PC speaker
 Dynamic speaker with 4-pin connector | |
| Date invented | 1981 |
|---|---|
| Invented by | IBM |
| Connects to | Motherboard |
| Use |
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| Common manufacturers |
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A PC speaker is a loudspeaker built into some IBM PC compatible computers.
The first IBM Personal Computer, model 5150, employed a standard 2.25-inch (57 mm) magnetic driven (dynamic) speaker. More recent computers use a tiny moving-iron or piezo speaker instead.
A PC speaker generates waveforms using the programmable interval timer, an Intel 8253 or 8254 chip.
The speaker allows software and firmware to provide auditory feedback to a user, such as to report a hardware fault.