jun 18, 1976 - Thw Wonder Wizard Model 7702 this system used a 3-position switch to choose one of three predefined combinations of difficulties, avoiding the need to change the ball speed, ball angle and bat size separately.
Description:
http://www.thegameconsole.com/magnavox-wonder-wizard-7702/Added to timeline:
Date:
jun 18, 1976
Now
~ 49 years ago