How can I send a bit to an optocoupler connected tp PC

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Article #6198

#6198

From: NAVEED IQBAL
Date: Thu, 13 Aug 1992 23:51

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I want to write a program in C to turn on a relay controlled by an 
optocoupler. I want to connect the coupler to a Pcs serial/parellel 
port.
- What would be the pinout?
- How can I do that in C?
  - or another language?
- I don't want to use those interface boards as I can't afford to.



Thanx
Naveed Iqbal
NIqbal@uh.edu

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From: cscc13@judy.uh.edu (NAVEED IQBAL)
Subject: How can I send a bit to an optocoupler connected tp PC
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