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Where Is The 20 Pin Connector?


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#1 mkanter

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Posted 08 April 2004 - 03:13 PM

THIS POST IS NO JOKE!!!

I got an "connection try" when i have the 3 pin connector plugged in, the settings to usb comm. and touching the other connector of the cable. So i thought the 3 pin and the "20" pin are connected together (have the same comm controller).

Then i measured the connections of the "20" pin connector, looked closer to it and: The "20" pin connector has only 16 pins!!!

So why is it called "20" pin???

may it's possible to comm through the "wide" connector with the receive,... commands.

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#2 Daruosh

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Posted 08 April 2004 - 08:54 PM

I think it called 20 Pin connector becasue it connect CP to a RS232 post. and it has 21 pin. Anyway many devices don't use 21 pins of serial port.
You can see this in your monitor (analog input) connection port. some pins don't exist.

#3 Andy.Davies

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Posted 09 April 2004 - 10:35 AM

most people i know of use the 9 pin serial port, not the 21 pin version

#4 mkanter

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Posted 10 April 2004 - 12:29 PM

On several web sides i found this about rs-232

http://www.lookrs232...story_rs232.htm:

"Most equipment using RS-232 serial port has DB-25 plug, though standard documents didn't define a specific plug, nowadays most computers use the DB-9 plug for asynchronous data exchange."


Maybe i'm not old enough, but i've never seen an 21 pin connector at an pc.

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#5 Andy.Davies

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Posted 10 April 2004 - 12:59 PM

sorry i meant 25 pin, just a typo :)

@mkanter: i edited your post, to make the hyper link clickable :)




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