Preface

I wrote this book largely as a means of interesting young people in the field of electronics, computers and, of course, robots. Back in the 1930s, 1940s, and 1950s, young people (mostly boys then) were attracted to electronics engineering largely as the result of radio kits and radio design. Although radios are taken for granted today, back then a radio was an exotic piece of hardware. A radio cost more than a week’s salary for an average worker back in 1930, so it was hardly the commodity that we consider it today. A young person building a tube radio back then was working with something that was both cutting-edge technology and that was of real value when completed. If you talk to an electrical engineer who grew up back in the mid-20 ...

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