Raspberry pi zero w

With the release of the "Raspberry pi zero W" there was much rejoicing in my household.
It now includes built-in WIFI and Bluetooth.

There are numerous boards to add a serial port to the Pi.

HOWEVER to use the serial port there have been some changes (Applies to the PI 3 also),
the serial port is no longer /dev/ttyAMA0 but rather /dev/ttyS0
Also the following line must be added to /boot/config.txt:
enable_uart=1

So far it works great with minicom at 9600 baud , connected to a Kaypro 2X running MDM740. Now onward and
upward.