Super Mario Theme - played by Four calculators

We never knew calculators could be used for playing music, but these ones, made in China and bought on Amazon, apparently do! The calculators don't have every tone but we'd say the Super Mario Theme played on them turned out pretty good!

The uploader, from Japan, created a video explaining more about these interesting calculators in the second video below.

It's a small world

Introduce Calculator AR-7778 and AR-8001 & about practice

Hello.
I try to introduce the calculator.