HP Forum Archive 21

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Sad news Message #1 Posted by Eric Smith on 5 Feb 2013, 9:49 p.m. Chris Bunsen has passed away. Chris worked on design and firmware for various HP calculators, and was awarded patents on a number of innovations. http://www.gazettetimes.com/news/local/obituaries/christopher-m-bunsen/article_cbe0b28c-6f66-11e2-83c4-0019bb2963f4.html

Re: Sad news Message #2 Posted by db (martinez, ca.) on 6 Feb 2013, 1:26 a.m., in response to message #1 by Eric Smith ....wrote HP Solve, played the Tiple, could deliver a baby, known for his cooking.... He sounds like he could have been the model for the man in Heinlein's quote Specialization is for Insects. It's too late but, thanks Mr Bunsen.

Re: Sad news Message #3 Posted by Mike (Stgt) on 6 Feb 2013, 4:25 a.m., in response to message #2 by db (martinez, ca.) He did HP-Solve? Hope he left at least some write ups about it. HP-Solve is - not only for me - a milestone. Sad.....Mike

Re: Sad news Message #4 Posted by Namir on 6 Feb 2013, 6:27 a.m., in response to message #1 by Eric Smith Wow, Chris was behind the implementation of HP Solve???!! Sad day for algorithm loves like myself. Chris you are the man!! Namir

Re: Sad news Message #5 Posted by Gerson W. Barbosa on 6 Feb 2013, 7:28 a.m., in response to message #4 by Namir Chris Bunsen was behind the HP Solve user interface of the HP-18C and subsequent calculators: http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1987-08.pdf ( History and Inspiration of the Solve Interface, by Chris M. Bunsen, can be found at page 10) The SOLV key, a primary function on the HP-28S, was one of the things that impressed me back in the day. Still today a joy to use! The algorithm itself was based upon Prof. Kahan's, I think: http://www.eecs.berkeley.edu/~wkahan/Math128/SOLVEkey.pdf It's really bad news when a creative and active mind goes away unexpectedly. Rest in peace, Mr. Bunsen! Gerson.

Re: Sad news Message #6 Posted by Namir on 6 Feb 2013, 7:52 a.m., in response to message #5 by Gerson W. Barbosa In a direct communication with professor Kahan to inquire about the details of the Solve algorithm, he mentioned that as master's student was working on it. What was Chris's involvement? I don't know. Does anyone have more insight?

Re: Sad news Message #7 Posted by hpnut on 6 Feb 2013, 11:35 a.m., in response to message #1 by Eric Smith I remember the menu implementation on the HP 41CX. thanks for your work, Chris. RIP.

Re: Sad news Message #8 Posted by Eddie W. Shore on 8 Feb 2013, 9:27 a.m., in response to message #1 by Eric Smith RIP Mr. Bunsen. Thank you for everything. Condolences and comfort to the family.

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