Slots have come a long way from Charles Fey’s original three-reel machines to...

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

Slots have come a long way from Charles Fey’s original three-reel machines to Bally’s Money Honey, the first electromechanical slot. Now, video slots and smartphone games bring the casino right to your fingertips