Bob Otnes

• MS in math and physics
• PhD in engineering
• Co-author of some books on signal processing
• Interested by the history of calculation !!
• I have founded with Rodger Sheperd the Oughtred Society in 1991
• Collector of slide rules, calculators, old books on these subjects
• I believe that Thomas de Colmar is more inportant in the development
of computing than Babbage !