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how to convert serial port to USB port?

Posted on 2004-08-23
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Last Modified: 2008-02-20
hi there,

having a problem...
i need to convert from serial port to USB port?
as i had a program that read the COM port rather than USB port..

may i know how to differentiate the different USB port(is there name for it, eg for COM port is COM1,COM2..what about USB port??)...
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Question by:TPoly
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Expert Comment

by:grblades
ID: 11867908
Hi TPoly,
So you don't have any COM ports on your machine?
You can buy a USB Serial adapter. It plugs into the USB port and has a normal serial port on the other end. Then when it is plugged in the computer registers an additional serial port which your software can just use like any other.
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by:Magistus
ID: 11867933
Hi,

Here is an example of such a device - many can be found on the net + explanation on how translation from USB to COM is done. Inj any case, what you'll have is a Virtual COM (VCOM) with COM3,COM4....etc. addresses, so your programs can access those ports in any time.

Enjoy.
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Expert Comment

by:Magistus
ID: 11867937
Sorry, forgot to put the link to example device site:
http://www.quatech.com/public/googusb.htm
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Expert Comment

by:Phatdave
ID: 11867985
Hi Tpoly ,

Title: how to convert serial port to USB port?  (SERIAL - USB)

I havn't seen it done - but if you're talking USB - SERIAL , the responses listed here are spot on.
** I've noticed with USB-SERIAL bridges that the baud rate can be a bit fiddly setting up (most seem to work best @ 9600) , other problems can arise  if the software you're using needs to access a physical hardware address -   the only fix then (if you're using a laptop) is to get a  PCMCIA - SERIAL. (which offers a true hardware port) but PCMCIA-SERIAL costs about 5 times as much.

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nobus earned 1500 total points
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