Lego Technics actually just turned 40 last year. Technic kits have always differentiated themselves from their blocky contemporaries with a focus on additional parts such as gears, motors and axles to facilitate motion, and while the window dressing has changed over the years from the bulldozers and helicopters of yesteryear to the newest, coolest sports cars today, that core premise hasn't.
More Gears in Cyberspace
Dial in to the web site of Chicago's Museum of Science and Industry for an online version of the museum's Gears from the Century of Progress exhibit.