i can't even check out those links, im in class doing a logic gate assignment. These things annoy me. Using llt's. Tomorrow im gonna be building the actually thing, should be fun. The logic gates are a little confusing but i think im getting the hang of it (XOR NOR OR AND NAND gates are what im using right now) With LLT's though. The project for tomorrow (might be monday) is making a pattern with lighting up led lights on a circuit board. Can't wait.