I had it aged 3, so 1984. It was a bulky tablet which had double sided A4 game cards - rest were stored underneath. The card you played was held in by a frame.The on/off buttons were on the left of the cards. Had to press the red key, which was in different places on each card- that determines which card you played.
The tablet toy spoke, was white on top and blue bottom. There were 3 lights green, yellow and red. It took a load of batteries as well.