Follow the development of the MadAdder, the new talking, printing calculator through the history of the abacus, slide rule, Pasqualine, Sheutz Difference Engine, Burroughs, IBM, Magic Brain, Monroe and Windows. Learn about the magic of numbers. Review the many features of the MadAdder.
File Size6.65 MB
Operating System Windows 2000 Windows XP Windows 95 Windows Windows NT Windows 98