Welcome to my site. My passion is calculators, and
I'd like to share my ideas and information with people having similar interests, and to
explore ways to improve the efficiency of these little wonders of technology.
I enjoy learning about the history of mechanical and electronic calculators,
and I've written a few articles in this field. I'll be happy to post in this site
any related articles that you may want to write. You will find here several
resources that may be useful if you collect old calculators
I'd also like to invite you to review my
Patent No. 5,623,433 for "Extended Numerical Keyboards
with Structured Data-Entry Capability." This method
improves the traditional 10-key numerical keyboard by introducing 3 additional keys which
allow to enter a number in the same way as you think on the number, rather than as a cold
sequence of digits.