Editing PC speaker (section)

{{Short description|Internal loudspeaker built into some (older) IBM PC-compatible computers}}
{{Distinguish|Computer speakers}}
{{Use dmy dates|date=January 2016}}
{{Infobox Computer Hardware Generic
| name        = PC speaker
| image       =File:PC-Speaker IMG 8161 (cropped).JPG
| caption     =Dynamic speaker with 4-pin connector
| invent-date = 1981
| invent-name = [[IBM]]
| conn1       = Motherboard
| via1_1      =
| via1_2      =
| conn2       =
| via2_1      =
| via2_2      =
| via2_3      =
| via2_4      =
| class-name  = Use
| class1      = [[loudspeaker]] built into most [[IBM PC compatible]] computers
| manuf1      = several
}}

A '''PC speaker''' is a [[loudspeaker]] built into some [[IBM PC compatible]] computers. The first [[IBM Personal Computer]], model [[IBM Personal Computer#Models|5150]], employed a standard 2.25&nbsp;inch magnetic driven (dynamic) speaker.<ref>{{Cite book |url=https://minuszerodegrees.net/manuals/IBM_5150_Technical_Reference_6322507_APR84.pdf |title=IBM 5150 Technical Reference |publisher=IBM |year=1984 |pages=1–25}}</ref> More recent computers use a tiny [[Moving iron speaker|moving-iron]] or [[Piezoelectric loudspeaker|piezo]] speaker instead.<ref>{{cite book |last=Rosenthal |first=Morris |title=Computer Repair with Diagnostic Flowcharts |edition=Revised |publisher=Foner Books |date=August 2008 |page=9 |url=http://www.fonerbooks.com/pcrepair.htm |isbn=978-0-9723801-7-1}}</ref> 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 [[Intel 8254|8254]] chip.<ref name="pit">{{Cite web |title=Bran's Kernel Development Tutorial: The Programmable Interval Timer |url=http://www.osdever.net/bkerndev/Docs/pit.htm |access-date=2023-01-23 |website=www.osdever.net}}</ref>