Fatto generale: 128 is the number of ASCII characters (33 non-printing characters, mostly obsolete control characters that affect how text is processed, and 94 printable).
Fatto matematico: 128 is the seventh power of 2.
Trivia: 128 is the number of characters in the ASCII character set.
Data storica: May 7th is the day in 1429 that Joan of Arc ends the Siege of Orléans, pulling an arrow from her own shoulder and returning, wounded, to lead the final charge.