27 thoughts on “Weekend reflections

  1. BilB

    I had a HP15C programmable calculator for many years that was fantastically useful and efficient. With RPN, statistics, matrix maths and a SOLVE function I could analyse data on it very quickly; I often think that for smaller calculations such devices are still unbeatable becasue you can finish the calc on them before your PC has booted up. Unless you are doing analysis of very large volumes of data they are still the best IMO. Mine recently stopped working (after 23 years) and I was very dissappointed to find they no longer make them.

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