Not in summary, read on…. Note: scroll down if you want to look at the test code. Setting a 16bit binary number that needs to be viewed in hexadecimal worked well (third row of display in image right) ...

I have been pondering how to quickly and accurately manually set up a 16bit binary number in an Arduino (or other microcontroller). This problem has arisen since my (mostly) lovely FY6900 DDS signal ...