Re: Printer port confusion


"Randy Day" <randy.day@xxxxxxxx> wrote in message
news:fCXmh.557172$R63.52863@xxxxxxxxxxxx

Is there a reason why different websites list different
signal states on some parallel port pins? Are some just
wrong, or were there two types of parallel ports for
PC's at one time?

There USED to be a standard - Centronics - which many computers used. All
Radio Shack computers used that standard. For reasons only they know IBM
used the standard serial port as a connector and changed the use of some
pins. This became the new standard and, as a result, some ignorant people
say that Radio Shack "didn't follow the standard" which is stupid because
IBM wasn't making the PC in 1977.

IBM also screwed up the serial port standard by using the other polarity
connector for that.



.

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