The IBM PC speaker

A [IBM] PC speaker is a loudspeaker built into most 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 piezoelectric 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.[3]

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	severa