FEATURED VIDEO

Sponsored By:
SLIDE SHOWS
Our list of the most innovative executives of the year spotlights the people that are pushing the envelope with new products and channel programs to bring solution providers to new heights.
Find out which executives made the grade and held their own, despite the great IT downturn of 2009.
Most everyone loves Thanksgiving turkeys. But IT industry turkeys? Not so much. We look at 10 examples of 'turkeys' that have disappointed the tech industry this year.
INSIDE CHANNELWEB

Results found for: RS-232
Printer Print This Page
techweb
RS-232
techweb
(Recommended Standard-232) A TIA/EIA standard for serial transmission between computers and peripheral devices (modem, mouse, etc.). Using a 25-pin DB-25 or 9-pin DB-9 connector, its normal cable limitation of 50 feet can be extended to several hundred feet with high-quality cable.

     RS-232 defines the purpose and signal timing for each of the 25 lines; however, many applications use less than a dozen. RS-232 transmits positive voltage for a 0 bit, negative voltage for a 1. In 1984, this interface was officially renamed TIA/EIA-232-E standard (E is the current revision, 1991), although most people still call it RS-232.

Pin Settings for Plug
(Reverse order for socket.)
__________________________________________
1 2 3 4 5 6 7 8 9 10 11 12 13
14 15 16 17 18 19 20 21 22 23 24 25
_________________
1 2 3 4 5
6 7 8 9
25 pin 9 pin
1 - PG Protective ground
2 - TD Transmitted data 3
3 - RD Received data 2
4 - RTS Request to send 7
5 - CTS Clear to send 8
6 - DSR Data set ready 6
7 - SG Signal ground 5
8 - CD Carrier detect 1
9 - + voltage (testing)
10 - - voltage (testing)
11 - 
12 - SCD Secondary CD
13 - SCS Secondary CTS
14 - STD Secondary TD
15 - TC Transmit clock
16 - SRD Secondary RD
17 - RC Receiver clock
18 - 
19 - SRS Secondary RTS 9 pin
20 - DTR Data terminal ready 4
21 - SQD Signal quality detector
22 - RI Ring indicator 9
23 - DRS Data rate select
24 - XTC External clock
25 -





Search For RS-232 On ChannelWeb

Find the latest news and information on RS-232 from across the Channelweb Network of IT Web sites.


techweb
temrs similiar to your header
Entries before RS-232
techweb
techweb RPTV
techweb RR
techweb RRAM
techweb RRAS
techweb RS-170
 techweb Entries after RS-232
techweb
techweb RS-422
techweb RS-423
techweb RS-449
techweb RS-485
techweb RS-530
techweb
define another it term
techweb techweb

techweb
Or get a random definition
techweb
copyright THIS COPYRIGHTED DEFINITION IS FOR PERSONAL USE ONLY.
All other reproduction is strictly prohibited without permission from the publisher.

Copyright (©) 1981-2008 The Computer Language Company
Inc All rights reserved.
ADVERTISEMENT




CHANNEL SERVICES >>