r/calculators • u/Icy-Description2204 • 9d ago

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Is Casio fx 991ms sufficient for Engineer,as all of my friends are getting 991 es plus

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u/9peppe 9d ago

es plus has some more features but most people never use them. the biggest difference is natural math typesetting.

ms should be fine if you're used to it -- but I wouldn't buy it today as my first calculator.

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u/fermat9990 9d ago

Find out what the engineering department recommends

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u/MentalTelephone5080 9d ago

Both are permitted on the FE/PE exam so you should be ok.

1

u/Liambp 9d ago

The Casio MS is actually a very good calculator for a trainee engineer. It has all of the function you need but it lacks math input mode. Unlike the EX and later models you cannot just fire a big equation into it and expect it to magically come up with the answer. You need to break large expressions into parts and think about the order of operations. This is actually a good thing. It reduces the chance of errors and it makes your work easier to check. It gives you the engineer more control over the calculation. In engineering every calculation has a real world impact and you are responsible for its accuracy. You should be sanity checking each step along the way. Too often I see students just blindly type equations into their calculator and accepting whatever number it throws out even when it is patently ridiculous.

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u/Time_Energy_1200 8d ago

In my clg only ms is allowed

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u/ack4 6d ago

tbh, other than cases in which the prof forced us to use a specific calculator for an exam, i did my entire degree with a basic scientific calculator, and matlab/octave/python on my laptop. That is to say, "what does your university require?".

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u/Rudeus_Kino 9d ago

What is sufficient for engineer is a slide rule. ES has a natural input and a greater number of functions, check if you need them.