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The one of the tools to assist the calculation with the electronic calculator (I do not appear cook it).
I was called a desk calculator before, but became the official name in JIS B0117 in 1,979 (Showa 54) years.
It is a small computer of the suitable size to use it according to the name on a desk.
A card-shaped thing appears and, in addition, software named "the electronic calculator" is equipped with by a PC and a mobile telephone and does it, and it is not always "a desk" now.
The tax-included functions that I calculated came to be added after the introduction of the consumption tax.
I am usually called "an electronic calculator" conventionally.
The electronic calculator which addition, subtraction, multiplication and division operation and a calculation of the percentage can play.
Generally many of used electronic calculators are these.
There are many models that around 8 columns calculations are possible.
I am divided into a model with the root key and a few model.
In addition, a certain thing has a key and a tax-included key.
For example, Japanese (a consumption tax rate)： In the case of an electronic calculator of 5%), the price that I divided by 1.05 when I input a number and push the key is displayed.
The price that I multiplied by 1.05 when I push the tax-included key in the same way is displayed.
For the change of the future consumption tax rate, there are many things which get possible to change tax rate setting.
There are a calculation (a sexagesimal calculation) and the thing which it is possible for I do business, and to calculate (in search of one value to be left from 2 among a cost price, a sale price, profit rates) in time.