[GreenKeys] 232 COM port to TTY - Mighty-Mite to the rescue!

[Duncan M. Brown]

Thanks to James Tanton: on the UGC-38, -40, -41  "Mode 2, ON, LOW"  (on
line, low current level) provides for a loop current of 2.5 -10 ma. and is
the one to use with a computer serial port.

  have fun,

  --Duncan