General > General Technical Chat
What's the current go-to calculator for electrical engineers?
armandine2:
Might even be interesting to try out the TI Nspire, on its (Vernier) lab cradle using the voltage and ammeter sensors, in the data logging mode.
I should get around to doing it - having bought the gear!
SparkyFX:
--- Quote from: kripton2035 on October 31, 2021, 12:42:45 pm ---casio fx991ex
--- End quote ---
The solar cell feature is awesome. Battery lasts a decade or more easily.
There is also an app with a similar user interface: https://play.google.com/store/apps/details?id=uk.co.nickfines.RealCalc&hl=de&gl=US
edit: I am old, i was referring to a somewhat similar FX992s here.
mansaxel:
--- Quote from: SparkyFX on November 12, 2021, 11:32:57 am ---
--- Quote from: kripton2035 on October 31, 2021, 12:42:45 pm ---casio fx991ex
--- End quote ---
The solar cell feature is awesome. Battery lasts a decade or more easily.
There is also an app with a similar user interface: https://play.google.com/store/apps/details?id=uk.co.nickfines.RealCalc&hl=de&gl=US
edit: I am old, i was referring to a somewhat similar FX992s here.
--- End quote ---
I have a Sharp EL-506p. It's on its first set of batteries. It was bought in 1984, by my mother, for me.
Batteries probably are very toxic, but if one has to swap them every 35 years and there are better ones now, I'm OK with that.
SiliconWizard:
--- Quote from: mansaxel on November 12, 2021, 05:58:06 pm ---I have a Sharp EL-506p. It's on its first set of batteries. It was bought in 1984, by my mother, for me.
Batteries probably are very toxic, but if one has to swap them every 35 years and there are better ones now, I'm OK with that.
--- End quote ---
This calculator works on LR44 button cells.
They certainly contained a small amount of mercury, which was the case for pretty much all button/coin cell batteries AFAIK, and even a lot of other types of primary batteries.
Mercury-free batteries are a relativey "recent" trend due to environmental regulations. You can absolutely find mercury-free LR44 batteries these days. They may not last as long as 35 years, but they'll be good enough.
PlainName:
Got a Casio FX-450 in the garage which hasn't seen daylight in 20 years or so. I am fairly sure I bought it around 1987, so it's about 34 years old. It will still power on just from the overhead (now not very bright) 2ft fluorescent tube over the bench, although nowadays I am reluctant to use it in case the hinge gives up.
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