Slots have come a long way since Charles Fey’s original three-reel slot. From...

https://www.oddee.com/7-surprising-inventions-that-turned-slot-machines-into-digital-games-79667/

Slots have come a long way since Charles Fey’s original three-reel slot. From Bally’s Money Honey introducing electromechanical cabinets to the rise of video slots and now playing on your smartphone, the game has evolved like never before