Format specifier
'8' : Generic 7 segment digit with individual addressable segments
- Reduced capability 7 segm digit, when segments are hard wired together.
+ Reduced capability 7 segment digit, when segments are hard wired together.
'1' : 2 segments digit only able to produce a 1.
'e' : Most significant day of the month digit,
able to produce at least 1 2 3.