Lego uses basic studs and sockets allowing the simple bricks to clip together. The initial bricks and blocks eventually evolved into more complex designs which use pins(similar to rivets) and axles, as well as gears, Pneumatic valves and pistons, motors and even <a a="" brain")="" class="wiki" for="" href="/wiki/microcontroller.html" robot"="" title="A programmable digital controller (or ">Microcontrollers.
They have some great kits for building robots in the MindStorms and Dacta RoboLab range like the RCX, CyberMaster, MicroScout? and SpyBotics. Because of their Technic range, they have been a favourite for robotic inventions since the early eighties.
The company are believed to be one of the oldest toy makers with plastic injection moulding machinery, and as such have contributed largely to the techniques. They are also believed to currently have one of the most advanced plastic injection moulding plants in the world to date.
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