Yaaaas, my dad had one of these and through some magazine I had learned it could produce music… I had limited success but I was able to master enough annoying compositions to be forbidden from messing with it. I forgot entirely about this until your photo. Wow.

And I had no clue who Kraftwerk were until the 90s when I could comprehend and appreciate anything. I had no clue about the connection.

I had that calculator! I remember it fondly. I annoyed the heck out of so many people with it.