The Museum of HP Calculators

David Hayden is a registered user.

Date Registered:   December 2008
Location:   Central New Jersey, USA
Interests:   HP 41 series, HP 29C, H49 series, improving the usability of calculators

David Hayden has chosen to keep his/her email address private. Unfortunately it is not possible to contact posters privately from archived posts. We're sorry for the inconvenience.


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