Player creates working Computer in Minecraft

WHAAA my mind just exploded. That's incredibly clever, and must have taken a lot of time and thought. Definitely makes me want to try this game.
 
xzibit-wtf.jpg
 
I can't wrap my head around the the concept that the game has semiconductor simulation. Because there has to be some type of semiconductor material or process in the game for the whole thing to work.
 
I can't wrap my head around the the concept that the game has semiconductor simulation. Because there has to be some type of semiconductor material or process in the game for the whole thing to work.

There is a type of in-game material called "Redstone", it's behavior in the game allows the player to construct circuits and logic gates.

http://www.minecraftwiki.net/wiki/Electricity