Chapter 12. Audio
When they designed the original PC 25 years ago, IBM didn't foresee audio as a business necessity, so the only provision early PCs made for audio was a $0.29 speaker driven by a square-wave generator to produce beeps, boops, and clicks sufficient for prompts and warnings. Reproducing speech or music was out of the question. Doing that required an add-on sound card, and those were quick to arrive on the market as people began playing games on their PCs. Early sound cards were ...
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