3D Conversion calculator is an active 3D object. By touching the sides, the screen or top, you can turn it around with your finger. The silver key-foil is deliberately insensitive to touch movement. This is because it was found that in use the key-foil would sometimes be hit instead of a button press and result in turning the calculator accidentally. Additionally, two finger touch can be used to pinch the view in or out and to turn.

The calculator can be brought back to the home position by tapping the screen. Tapping toggles between two home positions; tilt view and face view. Tilt view shows best the whole calculator, whilst face view brings the keyboard and display close to your screen and is convenient for calculating, especially for smaller devices.

Settings may be adjusted by tapping the gear icon in the top right corner. You can adjust the light brightness and the key click volume. Sometimes the audio volume is also affected by the master setting of your device, so please check your overall device audio volume if the level is not suitable.

History and Information

3D Conversion Calculator is based on the Casio JL-120 made in Japan. This was one of many semi-desk calculators designed for arithmetic with large, easy to press, buttons; but was also small enough to be stowed conveniently in a briefcase.

This model has an LCD display and was one of the transition models between the older vacuum fluorescent and later, much smaller, models powered by button cells; this model being powered by two large batteries.

The original worked internally to 10 digits. This model works internally to a higher precision than the original and consequently can be more accurate for some calculations.

Differences

Conversions! The Casio JL-120 didn't have any of the useful unit conversion function of this model. Conversions were added to make this model much more useful and without having to reduce the button size. In fact, the unit conversion facility make this model almost totally different from the original.

Part of the goal in the nostalgia of retro machines is to leave behind their limitations. In view of this, there are a number of differences between the remakes and the original machines:

The "C" (cancel entry) key on the original would clear the whole input. Modern machines delete the last digit, a bit like backspace so that a simple typo can be quickly corrected. So, "C" works the modern way for your convenience.

Rather shockingly, the original did not round the number on display so, for example, 2 / 3 would display 0.666666666 instead of 0.666666667. The remake performs display rounding as appropriate.

FAQ

Q: Why isn't there any screen annunciators?

A: The original didn't have any, but they might appear in a future release.

Q: Is this an emulator?

A: No, 3D calculator is a, from scratch, simulator.

Q: Does 3D Calculator work in decimal?

A: Yes, like real calculators, all arithmetic is decimal not binary.