Hello
Well, I had a bit of tongue in cheek when I recalled the ancient history with the PDP8/PDP11 but those are near and dear to my heart
as they were my first "computers" and it was a love affair of both pain and pleasure interfacing lab equipment to those DE boxes.
the RS-232C 12V 20mA serial line is still quite evident in agriculture and organic chemistry sensors and lab equipment.
Push comes to shove, use a Serial-to-USB dongle (FTDI chip) and just drop the RTS/CTS signals
Riley
In jest I am attaching the U-Blox NEO-8M Hardware Integration document to this email