It convertsfrom 3-bit binary to a 7-segment "8" display of letters. It isn't as complex as 11 to 16 segment display with diagonal bars as well, but it does get you through the alphabet(except "M, V, Z").
A-H
A,a---000
B,b---100
C,c----010
D,d---110
E,e----001
F,f-----101
G,g----011
H,h----111
