The Internet revolution of the 1990s saw the first online casino with online slots launched in 1994. Fast forward to 1976, when the first video slot machine was introduced, featuring an electronic color display and logic boards. It was a coin-operated gambling machine that Fey, a San Francisco mechanic, built in his basement. The first slot machine in its ‘modern’ version was invented in 1894 by Bavarian-born American inventor Charles August Fey.
Understanding Different Types of Slots & How They Work