For more than a decade I’m collecting HP calculators and computers. By a very lucky coincidence I had the chance to acquire an HP 9100B calculator and some accessories a few years ago. A dream came true, and since then I had the strong feeling that such an amazing calculator deserves a dedicated website. Well, here it is, and as time allows I will do my best to fill it with interesting content about HP’s first calculator.


The website hp9100.info is maintained by:

Jürgen Keller
Sonnenbergstrasse 24
CH-8594 Güttingen
Tel: +41 (0)76 510 53 76
E-Mail: jkeller@gmx.ch


© 2011-2018 hp9100.info / Jürgen Keller. All rights reserved.

The content and works published on this website are governed by the copyright laws of Switzerland. Any duplication, processing, distribution or any form of utilisation beyond the scope of copyright law shall require the prior written consent of the author in question.


The content of this website has been compiled with care and to the best of our knowledge. However, we cannot assume any liability for the up-to-dateness, completeness or accuracy of any of the pages.

This website contains links to websites of third parties (“external links”). As the content of these websites is not under our control, we cannot assume any liability for such external content.

This is a private, non-commercial website not affiliated with the Hewlett-Packard company. If you are looking for official information about HP calculators, please visit www.hp.com/calculators.