I don't care if you call me crazy for this...
It can display:
АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ
The binary string determines which segments are on like this:
A-B-C-D-E-F-G-H-I-J-K-L-M 0=off, 1=on
А=0001011110000|Б=0001011110110|В=0001111110110
Г=0001010100000|Д=0001111100111|Е=0001010110110
Ё=1001010110110|Ж=0000111111000|З=0001001010110
И=0000111100110|Й=1100111100110|К=0000011110000
Л=0001111100000|М=0001111100000|Н=0000111110000
О=0001111100110|П=0001111100000|Р=0001110110000
С=0001010100110|Т=0011010100000|У=0000111010110
Ф=0001111100110|Х=0000111011000|Ц=0000111100111
Ч=0000111010000|Ш=0000111101110|Щ=0000111101111
Ъ=0010011110110|Ы=0000110111100|Ь=0000011110110
Э=0001101010110|Ю=0000111111010|Я=0001111011000
MADE BY LUCAPRI, HAPPY CHESS DAY!