Not Just A Random Blog archive
Before the digital era calculations were done mechanically. Kevin Twomey opened some of these old adders up to photograph them. It’s amazing how today all of that can fit in something smaller than a penny! Check out a video about how one of these works at the bottom.
Everybody wants quick access to many things they need. That is why vending machines are growing in popularity, but some of these take it a bit far! At the Dallas/Forth Worth airport you can buy BestBuy gadgets to pass time on your next flight.