Build over 750 experiments with 80 partsExperiments included: sound activated switch, lie detector, adjustable light controller, am radio, rechargeable battery and many more. Use your Windows PC and the included CI-73 Computer Interface manual converts your computer monitor into an oscilloscope and lets you see signals in process in the circuits you assembleParts included: photoresist or, power amplifier, variable capacitor, analog meter, solar cell, computer interface, full color manualsSnap-Circuits have received the following Awards: National Parenting Center-Seal of Approval, Creative Child ?Toy of the YearToy Industry Association - Specialty Toy of the Year, Dr. Toy 100 Best Children's Products, Dr. Toy 10 Best Educational Products