Aaron, Hank (b. 5 February 1934) Reference library
(b. 5 February 1934),
baseball player, baseball executive, civil rights advocate, and businessman. Henry
Abacus Reference library
Considered to be the first computer, the abacus has been used since ancient times by a number of civilizations for basic arithmetical calculations. It is still used as a reliable reckoner (and one that does not require electricity or batteries) by merchants and businesspeople in parts of Asia and Africa.