> As far as I can tell, hams are the only users of RS-232 left. Wrong. There are still many industrial devices that use RS-232 and many many more that use RS-422/485.
> (RS-232 has > the wonderful advantage of making it easy to build interfaces.) >From an RF point of view, serial connections have another benefit ... they don't generate a lot of noise. > I don't > think there are any new laptop computers with RS223 ports. Are there any > desktops/towers? We manage to find them, but they are rare. Dell has some business notebooks with them, and the Panasonic Toughbooks we have, have serial ports. You can also find pc-cards that have serial outputs. However, notebooks and desktops/towers are not used very often. Most of this equipment talks to other pieces of stuff over serial connections without a 'conventional computer' in the mix. Notebooks are used mainly for service and troubleshooting. Mark AD5SS On Tue, Nov 27, 2012 at 4:59 PM, Bill Frantz <[email protected]> wrote: > I would say there are many many more computer to computer connections over > TCP than over RS-232. And many more over PPPoE > <http://en.wikipedia.org/wiki/Point-to-point_protocol_over_Ethernet>. > > As far as I can tell, hams are the only users of RS-232 left. (RS-232 has > the wonderful advantage of making it easy to build interfaces.) I don't > think there are any new laptop computers with RS223 ports. Are there any > desktops/towers? > > I am a big fan of the IP protocol family for general communications between > devices. With a broad collection of protocols which include flow-controlled > point-to-point (TCP), Multicast <http://en.wikipedia.org/wiki/IP_multicast>, > Datagram (UDP); most communication problems can be solved with a well-tested > protocol. > > Full disclosure: One of the happiest days of my life was about 8 years ago > when I got rid of the last RS-232 connection in my house. Newer systems used > USB and ethernet and older ones got turned off. Then I got active in ham > radio... > > Cheers - Bill, AE6JV > > > On 11/27/12 at 2:03 PM, [email protected] (Don Wilhelm) wrote: > >> I would submit that RS-232 is still the common denominator for point to >> point computer communications. No licenses, no registration, no unique IP >> addresses, just "communicate". > > > ----------------------------------------------------------------------- > Bill Frantz | Truth and love must prevail | Periwinkle > (408)356-8506 | over lies and hate. | 16345 Englewood Ave > www.pwpconsult.com | - Vaclav Havel | Los Gatos, CA 95032 > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
