PV Gap

Brenda Said:

Any one else got a calculator which you shake to power up?

We Answered:

I've heard of watches that do this, but never a calculator before. Interesting idea!

Terrence Said:

Dual powered calculator ( solar & battery ) needs battery to work. It this correct ?

We Answered:

No they make good pucks either way. This is the hockey section...

Milton Said:

When were solar powered calculators invented, and by who?

We Answered:

1978
by Teal Industries Inc., (Tokyo Electronic Application Laboratory Ltd.)
also Royal Typewriter Company
also Sharp

The first solar powered calculators were introduced, the Royal Solar 1, Teal Photon Teal Photon , and Sharp EL-8028.

Jennifer Said:

Can solar powered objects like a watch or calculator be charged by any light?

We Answered:

The short answer is Yes. Calculators dont take much energy and will almost always work with indoor light. Watches take more power. You would want to charge your watch in sunlight for a couple of days to get it fully charged, but after that, indoor light will help it to maintain its charge.