One of the first "Game Consoles" called Simon had 4 large illuminated buttons that had to be pushed in the same order that the random generator showed. The game can still be found today e.g. on some cell phones.
With the Thames and Kosmos Microcontroller Kit we can build a 2 button version of this game.
The Knob controlls the skill level. If you push the wrong button the microcontroller repeats the entire sequence. - Until you finally get it right and will be rewarded with applause and blinking LEDs.
Then turn up the knob a little and push the third button for a reset - what third button? There were only two included in the kit! Well, here is an easy way to make an additional button, or you can just leave it out and switch the microcontroller off and on for a reset.
The program uses up the entire memory and all labels of the microcontroller. That's why an automatic increase of the skill level was not possible. - Maybe somebody has an idea how to improve the program? After all even the 2.2MΩ-Resistor is used for saving memory. ;-)