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Winn L. Rosch Hardware Bible, Sixth Edition by Winn L. Rosch

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RS-232C Serial Ports

The day you win the vmega-lottery and instantly climb into wealth and social status, you may be tempted to leave your old friends to belch and scratch while drinking someone else's beer. But it's hard to leave old friends behind, particularly when you need someone to watch the house during your 'round-the-world cruise. So it is with the classic RS-232C port. It's got so many bad habits it's hard to talk about in polite company, but it's just too dang useful to forget about.

The serial port is truly the old codger of computer interfaces, a true child of the '60s. An industry trade group, the Electronics Industry Association (EIA) hammered out the official RS-232C specification in 1969, but the port had been in use for years ...

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