Ok Barbara,

We're developing a board that controls a Xerox machine, enable or
disable and count the number of copies that especific user made.
And this board is conected in the paralell port.
I know that is possible to do this with a COM port using fopen(),
fread(), fwrite() etc... But I never did something like this.
So, I want some example using this functions above with COM port,
AND another exmples using paralell port.