I guess my trying to put RS-232 in the "subject" line did not catch on. My original EIA Standard RS-232-C is dated August 1969 and it claims to be a revision of RS-232-B. It also says it was reaffirmed in 1981. There are I guess newer versions now, as stated by someone else on here. Regards - Mike
Mike B. Feher, N4FS 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Bob Camp Sent: Sunday, May 23, 2010 8:27 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject) Hi As mentioned in the wiki, the "standard" dates to 1969. The interface dates to (at least) 1962. I would not be at all surprised to find that it's older than that. My first exposure was on Bell system modems, which were showing up as surplus in the late 60's. The EIA standard was very much a "catch up with" effort as opposed to a "design to" document. No, Radio Shack did not actually issue any version of the standard. They operate at a level more appropriate to the standard than the EIA. Bob _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
