What makes a computer work? How does it read a disc? How are the messages from the keyboard transmitted to the monitor? These questions and more are answered in the book and through the projects in this book. With a book, cardboard workbench, and reusable plastic box, this kit introduces 20 projects that easily demonstrate the basic concepts of what makes computers work.

The 60 page illustrated booklet recounts the fascinating historical background of the signal flag, semaphore, phonetic alphabet, and Morse code systems featured in the deck. Packaged in a durable and attractive case, the set includes replica WWII Morse code flasher, semaphore training dial, Morse code bookmark, 2 full color posters, 5 vintage postcards, and 2 playing card decks. 108 cards, 60pp., b&w illus., pb.

See how electronic sensors respond to light, heat, infrared light, pressure, rotation, touch and magnetic fields. Includes everything you need for over 75 projects