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HP Calculator Heritage Ads 1972
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Richard: Something you might find of interest:
It was I that discovered the ROM Bug in the original HP-35. I was working as the Chief Engineer for KPPC-FM on Pasadena, and convinced the station to buy me a HP-35. I was "playing" with it in my office, and happened across the 2.02 -> 2 sequence. I called Cupertino, and through some quirk of fate, was connected to one of the field engineers. I introduced myself, and then asked if he had an HP-35 available. He replied, "Of Course!". I asked him to go through a calculation with me. As soon as the ´2´ popped up there was a long pause, and then an
"Oh, s**t!!". He didn´t take down my name or number, but there was a large group of HP-35 users I knew, and they can vouch for the authenticity of my claim...
Mike Callaghan, Chief Engineer, KIIS-FM Radio,
Los Angeles
In reply to Richard J. Nelson:
Hello,
The first scientific calculator was the HP35A. It immediately sold out and most customers were put on a long waiting list, often several months.
The lettered suffix was not included in external communications and was only used as an internal reference. Adding marketing suffix designations such as c for continuous memory was used for later models.
X Y,
Richard
Technical Support Manager
of the original EduCALC
Michael Callaghan
3/1/2008 4:19:21 PM - US
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Thank you Richard for spotting the error. You are right, back in the 70s the hp 35s were known simply as HP35. The page has been updated.
Webmaster, Educalc.net
In reply to Richard J. Nelson:
Hello,
The first scientific calculator was the HP35A. It immediately sold out and most customers were put on a long waiting list, often several months.
The lettered suffix was not included in external communications and was only used as an internal reference. Adding marketing suffix designations such as c for continuous memory was used for later models.
X Y,
Richard
Technical Support Manager
of the original EduCALC
Peter Tong
5/2/2007 10:33:25 AM - SG
| reply
Hello,
The first scientific calculator was the HP35A. It immediately sold out and most customers were put on a long waiting list, often several months.
The lettered suffix was not included in external communications and was only used as an internal reference. Adding marketing suffix designations such as c for continuous memory was used for later models.
X Y,
Richard
Technical Support Manager
of the original EduCALC
Richard J. Nelson
5/2/2007 8:14:44 AM - US
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