Send the data from your serial (RS-232) device to your keyboard.
Works with Excell or any other program on your MAC, Windows or Android device
Or Just makes a great Teensy LC Break Out board
 
KIT comes with TEENSY-LC or 3.2
SparkFun MAX2323
All Headers and Connectors
 
You Solder Yourself
 
 
Comes with Arduino Source Code