First Handheld Calculator
The first scientific pocket calculator hit the market in 1972. It was the HP 35. It got its name for its 35 keys. At $395 it was a bestseller with a million units sold in the first year.
The Pluto Platter
It’s a bird! It’s a plane! It’s a Pluto Platter! The Pluto Platter is a plastic disc that ... more
