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    Re: Book on calculators
    From: David C
    Date: 2023 Sep 2, 16:58 -0700

    Howard G

    There was a time when companies such a Hewlett-Packard assumed that its customers had some intellingence. I have attached a copy of part of an article in the HP Journal for June 1972. I could - but will not because it will be off-topic - post a series of articles explaining in detail how the HP-35 worked. Today if I google "how does the HP35 work?"  I would probably get a long list of you tube videos. This is the video generation.

    I am interested in your photo of three HP calculators. I do not recognise the  model numbers. More interestingly they do not have the "HP35" shape. Are they "cheap" versions of traditional HP calculators.

    Twenty or thirty years ago  in NZ it was decided that the country's future  depended on everyone having a university degree. Only those who were useless would learn a trade. After several earthqukes, a cyclone and covid we discovered that it is the tradies who are essential. Unfortunately trade training had virtually stopped for a few decades. We recently had a TV advert in which parents were told not to be ashamed or embarrassed if their child learnt a trade (not joking!).

    Recently a new secondary school science curriculum was announced. It did not once use the words chemistry or physics.

     Back to on-topic.......less than an hour's drive from where I live is a new dark sky reserve


    I note that Celestaire is offering a 10% discount. Maybe it is time to buy an A12 and prove that  I can reduce sights without a calculator or 229/249. In NZ the rising of Matariki (aka Pleiades) has been declared a public holiday. Should I  enter into the spirit of the public holiday by using the brightest of the Matariki stars to draw a position line?

    David C


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