The IVLM2-5/7 is a dual colour VFD display. It has two sets of segments. One BLUE and one ORANGE, arranged in the standard 5 rows x 7 columns fomat.
Driving the display is as simple as scanning the rows and columns with the desired segment patterns. This interface board I designed takes care of all the tedious display refresh work, freeing up a host microcontroller OR old fashioned logic circuits to do other things.
