You may want to look into "computercraft" http://www.minecraftforum.net/topic/892282-11-computercraft-13/ http://www.minecraftforum.net/topic/892282-11-computer

You may want to look into "computercraft" http://www.minecraftforum.net/topic/892282-11-computercraft-13/ http://www.minecraftforum.net/topic/892282-11-computercraft-... which you can add right now! But I agree it needs to be more than just a terminal - it needs to have the feeling of crafting/building structures. Even if you could "zoom in" with a crafted microscope or something and then create circuits which you can then connect to larger sensors/peripherals.