.JPG) Dynamic speaker with 4-pin connector | |
| Date invented | 1981 |
|---|---|
| Invented by | IBM |
| Connects to | Motherboard |
| Use | loudspeaker built into most IBM PC compatible computers |
| Common manufacturers | several |
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 magnetic driven (dynamic) speaker.[1] More recent computers use a tiny moving-iron or piezo speaker instead.[2] The speaker allows software and firmware to provide auditory feedback to a user, such as to report a hardware fault. A PC speaker generates waveforms using the programmable interval timer, an Intel 8253 or 8254 chip.[3]
- ^ IBM 5150 Technical Reference (PDF). IBM. 1984. pp. 1–25.
- ^ Rosenthal, Morris (August 2008). Computer Repair with Diagnostic Flowcharts (Revised ed.). Foner Books. p. 9. ISBN 978-0-9723801-7-1.
- ^ "Bran's Kernel Development Tutorial: The Programmable Interval Timer". www.osdever.net. Retrieved 23 January 2023.