For Computer Science, Electrical Engineering students! By canadiancircuits.com Why spend hours in the lab, when you can visualize this right at home? Get an edge over your classmates. Play with AND OR NAND XOR gates! This comes with: Circuit board with 12 switches & 8 lights & clock generator & gates, Solderless breadboard with 830 contacts, Some IC chips, 9V adaptor, 5V power wire, Wire kit, Ask me for link to user manual. Original cost about $126. Discount available if you buy more items from my page! Im also open to reasonable negotiations. By the way, Helps in understanding of Digital Logic class.