Dentaku - Playable Calculator 4+

In 1981, the German music group Kraftwerk released a song played on a calculator. The title of the song is “Pocket Calculator”. The Japanese version is titled "Dentaku". Dentaku (電卓) is the Japanese name for a calculator.

At the time, Japanese calculators were at the peak of their evolution and it was not uncommon to find calculators with musical scales assigned to each button and the ability to play music.

I created this application to remember the old days and to make the tasteless task of calculation a little more enjoyable.

This application is not only a practical calculator, but also designed to be enjoyable to use.

Features:

- Each button is assigned a note of the major scale, and you can play a sound by pressing it.
- Pressing between buttons produces a semitone.
- By selecting the scale display, you can check the scale of each button and the position of the semitones between the buttons.
- Choose from 200 different sounds.
- The background color changes dramatically as you tap the buttons faster.
- You can save your favorite background color and sound to "My Themes".
- In auto mode, background color and sound can be changed automatically.
- RPN mode is available for performing complex calculations quickly.
- The stack level in RPN mode can be selected between 4 and 8.
- You can transfer values to and from other apps via the clipboard.
- Priority mode for multiplication and division. If you want the app to behave like a standard Japanese calculator (excluding scientific calculators), please turn this mode OFF.