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Article #1511RS-422A and RS-423. Whats the diff?
From: Michael Sepa
Date: Tue, 21 Jul 1992 17:47
Date: Tue, 21 Jul 1992 17:47
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1424 bytes
Hi! I have a really silly question to ask, but I don't know where to look for it. What exactly is the difference between an RS-422A and an RS-423 standard? Are they as close as their numbers seem to indicate? The reason I'm asking is that I read that the NeXT machine uses the RS-423 standard for its serial communications. The HP deskwriter I own uses the RS-422A standard so it can talk to Macintoshes. I want these two items to talk. I've been told that the new operating system for the NeXT will support AppleTalk without massive hardware changes, so I think (I hope) that a NeXT machine will be able to talk to the HP deskwriter over the serial connection. Any leads to the definition of the two standards is greatly appreciated. If anyone else is curious about the outcome, I will mail (or post) any replies. Thanx in advance! Michael e-mail: sepa@enel.ucalgary.ca
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Newsgroups: sci.electronics Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!caen!destroyer!ubc-cs!unixg.ubc.ca!kakwa.ucs.ualberta.ca!acs.ucalgary.ca!sepa From: sepa@enel.ucalgary.ca (Michael Sepa) Subject: RS-422A and RS-423. Whats the diff? Sender: news@acs.ucalgary.ca (USENET News System) Message-ID: <92Jul21.174720.26587@acs.ucalgary.ca> Date: Tue, 21 Jul 92 17:47:20 GMT Nntp-Posting-Host: eneli.enel.ucalgary.ca Organization: ECE Department, U. of Calgary, Calgary, Alberta, Canada Lines: 29