I'll never forget that Christmas morning in 1984 when I got the mother of all Lego sets, the medieval castle, and how happy I was snapping the colored pieces together to build it higher and higher. So it was a special treat for me to open up the latest iteration of the Lego franchise, a sophisticated system of sensors, motors and computer controllers called Lego Mindstorms NXT.
Lego has come a long way from the little bricks I played with as a kid. The company now manufactures 15 billion bricks and other pieces a year. The first motorized Lego kit appeared in...
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