Tech History Made on December 23, 1947

On this day in 1947 the first transistor was demonstrated by Bell Laboratories. According to Wikipedia, a Transistor is "a semiconductor device, commonly used as an amplifier or an electrically controlled switch. The transistor is the fundamental building block of the circuitry in computers, cellular phones, and all other modern electronic devices." In fact, I'd be hard-pressed to think of a modern electronics device more complex than a flashlight that doesn't use a transistor. I guess you could say Ma Bell is one of the many mothers of modern technology.