# 【Scientific Calculator】Recommended useful functions, how to use, popular models for university students

I bought a scientific calculator to enter university, but it is very convenient to say the least.

There were people who brought it to high school class and played, so I knew what a "scientific calculator" was like.

This time, university students will introduce the charm and recommended models of "scientific calculator" that is convenient but surprisingly unknown!

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## What is a scientific calculator?

Scientific calculators are simply calculators that can perform difficult calculations.

It looks like a game machine with a screen like a game and a button that you do not know, not the 8-character LCD you usually use.

The stylish shape that is not like a calculator and the cross button in the middle make it even more attractive to the game console.

I don't see it in my daily life outside of science university, and I don't see it in my life outside of science.

## What can I do with a scientific calculator?

What you can do with a scientific calculator is simply "a complicated and troublesome operation like calculating in Excel".

Excel is often used for further calculations with calculated answers and calculations such as fractions and trigonometric functions.

However, the disadvantage of Excel is that it has its own input method, for example, [= 1 / (2 *3)/ (4 + 5)) + 6 + (7/8)]] and is complicated.

The advantage of calculators is that they can be calculated while written on paper, so I am very grateful for science to perform calculations!

### Can be calculated as a fraction

Scientific calculators can be calculated without having to fix fractions in your head to a few.

When you want to calculate with a calculator, when the value "1/2" comes out, you can not enter fractions, so you need to type "0.5" into the calculator.

However, since scientific calculators can enter numbers in fractions, it is possible to type as "1/2" as it is, reducing miscalculations.

In addition, since the number that can not be divided as it is like "1/3" can be input as it is, there is less error than calculating by typing "0.33".

### Take over the answers to the next

Scientific calculators calculate and pass on the value you have calculated once to the next calculation.

In general, when doing complex calculations, you calculate to some extent, note the answer, and then go to the next calculation, but you can omit it in scientific calculators.

If you press "+" as it is after giving the answer, it will be a screen called "Ans +", and the answers issued in the previous calculation will be assigned as Ans.

When you want to assign an answer in the middle of an expression, you only have to press the "Ans" button, so you don't have to remember or write down the answer.

### Solve equations.

Scientific calculators can perform calculations to determine unknowns such as x.

A function that you wanted to know about in junior high school when you suffer from equations, you can also find simple equations with a scientific calculator.

It is necessary to fiddle with the settings, and there are inconveniences such as not all solutions coming out, but there are also expensive models that can solve the 4-way equation that can not be solved by oneself.

### Can display fractions/small numbers

Scientific calculator allows you to choose the format in which the answers are displayed.

If the answer you asked for is fractions or a few, you can switch the display format by pressing the button of "S⇔D".

You can also change the idiity of fractions to band fractions, or change the angle notation of trigonometric functions from 30°, for example, to radians.

### Math constants can be used as they are

Scientific calculators preconfigur physical and mathematical constants.

Π = 3.141592 …, e = 2.71828 …, it is impressive to be able to use the math constants that competed as it is in high school.

The day has come when the number truncated by the problem of "calculate π = 3.14" will finally be rewarded by scientific calculators.

In addition, physical constants "me (mass of electrons)" and "(Planck constant divided by 2π)" that look for reference books for each problem can be assigned.

### Functions can be calculated

Scientific calculators allow you to write complex function calculations on paper.

You can calculate a combination of functions, such as sine, cosine, tangent, calculus, exponential logarithm, hypopublic and inverse trigonometric functions.

Thanks to the feature of "you can input while you see" described above, calculations are so crisp that you can't compare it to Excel.

The CASIO site contains calculation problems using scientific calculators, but there are problems that you want to calculate by hand rather than using Excel.

CASIO Scientific Calculator Examples and Operations (External Site)

### Unit conversion is possible

Scientific calculators allow you to recalculate the answers you have calculated in other units.

My scientific calculator "fx-375ESA-N 2012 edition" comes with a unit conversion code table for sticking to the case.

This also contains unit conversions that do not know that there is demand such as "kg →" from simple things such as "Å→m".

When you go abroad or read an overseas paper, it seems useful to fix inches to centimeters or miles to kilometers!

## Scientific Calculator Model

Here are some scientific calculators that are mainly distributed at my university!

Scientific calculators are pin-tight, from cheap items like light, liquid crystal pixels to high-end models that can display function graphs.

Speaking of scientific calculator manufacturers, "CASIO" and "SHARP" are two strong images in Japan, but if you look around, there are overwhelmingly many CASIO owners.

### fx-375ESA-N (Cospa Strongest)

Many science university students use the 2012 version of this model, and it is often cheaper to purchase it on Amazon than to buy it at the co-op of the university.

Because it is the lowest price model that can withstand everyday use of science, those who purchase a scientific calculator for the first time recommend this model.

Cospa has been used for about 2 years, but there are no problems, and since it is mainly running on solar cells, the battery has never run out.

It was cheaper than 2,000 yen, but there was a friend who bought three cars and brought them in in preparation for running out of batteries during the test (laughs)

Casio Scientific Calculator fx-375ES-N

### fx-JP500-N (a little stylish)

It is the upper model used after the "fx-375ESA-N" model described above by university students.

Since the pixels of the LCD screen become finer and the green color peculiar to the calculator is thin, it has excellent visibility when calculating.

It is a model that you can see a little high price such as a skin like CFRP on the surface and a stylish cross button. (Of course, the specifications are also above)

Casio Scientific Calculator FX-JP500-N

The pixel of the liquid crystal became even finer, and at the end of the end of the product, it became possible to display the color, and the price is a 5-digit monster model.

It covers calculations that can be used as scientific calculators, and can draw three-dimensional graphs, which is a thing that you do not know what you can no longer call a "calculator".

Since you have not seen anyone using it yet in life, please tell the witness what kind of person was using the function.

Casio Calculator Casio Calculator 10 Digit Graph Function FX-CG50-N

## Scientific calculators are useful!

Scientific calculators are so useful in this way, but of course there are a few things that you are not good at.

For example, multiple values cannot be performed the same calculation at once, it is difficult to draw complex graphs, and data cannot be synchronized.

When it comes to calculations as described above, it is a turn of calculation software such as Excel, but if it is just a calculation, a scientific calculator is enough.

It is important to use scientific calculators and calculation software as necessary!

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