Many computers in earlier version like 8086, 80286, 80386 and even 80486 don't have a sound card. How does if someone want to play programs that need a sound card like a game program to these computers? Here are a very cheap sound card designed by Tomi Engdahl that I found on the elsewhere in the net. There are two types of design. First, it used a simple ladder resistors to made a Digital to Analog Converter. Find the nearest value resistors with tolerance 1% or less. Second, it used an extra IC. Both design are to make an 8 bit sound card. The ouput can be connect to your sound system to tape decks amplifier or input to radio's amplifier.
These sound cards use a software driver used for Covox Speech Thing. You can download the driver from Tomi site or from here and installed it at the windows/system directory. This driver is for windows 3.1x design, but you can try it to windows 95. The sound is very good ... enjoy it.
Because this card used the same data line with printer, so when you do some printing job, irrating sounds will be heard from this sound card. This is not make any damage to your card or printer.
Nice Blog Post !
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