Re: Dual Serial port
On Tuesday, September 18, 2001 2:33 PM, adamm@psynch.com wrote:
> On Tue, Sep 18, 2001 at 11:25:45AM -0700, Lazar Fleysher wrote:
> > As far as I understand a regular 25 pin serial port has 2 serial ports
> > built-in on one chip.
> Uhm, i dont know what kind of computer you're using, but last i checked
> DB25 is exactly like DB9 except it re-arranges the pins and carries more
> redundant info.
Right. The 25-pin EIA-232-D includes lines not normally used by
PCs--mainly dealing with synchronous communication. All the
signals needed for async can fit into 9 pins ( or 7 pins or 6 pins or 4
pins... :) ).
-g
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