Solar-powered calculators

[Maximilian Hohmann]

Hello!

Interesting topic, I hope for many contributions...

Just last week I received a "Ti30 SLR" in the mail, an early (1982) solar only powered calculator. According to Datamath.org it was made by Toshiba in Japan. It has fairly large solar cells and requires very very little light to operate. If I can see enough to read the display then it works.

Apart from that it is just another plain vanilla Ti30. Functionally they didn't change much from the LED to the early LCD models, the only differene being the "n!" of the LCD models which the SLR also has. But the keyboard it a lot better than those made by Ti and still works without any bouncing after almost 40 years.

Regards
Max