Welcome to the MadAdder's web site.

Do that again

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.

Then download the MadAdder for a free 30 day trial.

Gannon Software Inc. 2105-1331 Alberni Street, Vancouver, BC, Canada, V6E 4S1
Telephone: 1-604-669-3300 Fax: 1-604-669-3301 E-mail: webmaster@themadadder.com