please assist me

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	Question by frank fine posted 26 Nov 2005
	please assist me
1.the different categories of twisted pair cables and their uses. 2.figuration of RJ 45 interface straight and crossed),serial port(DB9 and DB25)interface,parallel port(DB25 and centronics)interface.
	Answer by Joseph Golan posted 26 Nov 2005
Dear frank, Your question sounds like you are either taking a course in computers or cabling. We have a policy of not doing homework for students but will point you in the right direction to help you. First, for 8 pin modular jacks (an RJ-45 even though commonly used is an incorrect specification) can be found right here on this site: http://www.cabling-design.com/references/pinouts/ For categories of cable and their usage, see this url: http://www.superioressex.com/techinfo/unshieldtwstpr.pdf#search='utp%20categories' For serial ports: http://www.geocities.com/SiliconValley/Heights/5704/serial1.html Parallel ports: http://www.nullmodem.com/Centronics.htm Don't forget to quote your references Good luck with your studies Sincerely, Joseph Golan, RCDD
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