'0' = char 48 = 110000 binary
'1' = char 49 = 110001 binary
'2' = char 50 = 110010 binary
'3' = char 51 = 110011 binary
'4' = char 52 = 110100 binary
'5' = char 53 = 110101 binary
'6' = char 54 = 110110 binary
'7' = char 55 = 110111 binary
'8' = char 56 = 110100 binary
'9' = char 57 = 110101 binary