Battery packed up

[Old Greg]

I have a smiths scientific calculator I bought over 20 years ago.it's still going strong but has had several battery changes.

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[TimberWolf]

I can't use these new fangled calculators coz the operating method has changed so much, I keep getting "E" for error all the time.

Which reminds me of another bug bear in changing calculators. Whether it's Reverse Polish, prefix/postyfix or whatever term they use for the order you type symbols. On my trusty old calculator, if I want a reciprocal of a number for example, I type the number followed by the reciprocal function key, whereas with my newer ones the keying order is reversed and I often screw up, and reach for my trusty old Casio.

[BoredBloke]

Before I sat my a levels I replaced my trusty Casio fx 350 with a later model. The old calculator was in a bit of a state, bent out of shape and battered. In a free period I took it to bits and transposed the 1 and 3, 4 and 6 and 7 and 9 buttons. It looked essentially the same, but was impossible to use. On the day of my exam, one of my mates had left his calculator at home. He had no other choice but to sit his maths A level using my spare. I'd like to think that he would have failed it anyway without my help.

[original PM]

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[EternalOptimist]

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