In 1998 Lego introduced its first version of Lego Mindstorms sold as the Robotics Invention System (RIS). Although this first version proved popular, it wasn't until 2006 and the release of Lego Mindstorms NXT that Lego and robotics really took off. The latest version is the Lego Mindstorms NXT 2.0 released in August 2009.
Lego Mindstorms NXT
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The Lego NXT kit is comprised of a Central Processing Unit (CPU) called the 'NXT Brick'. This controller has four input and three output ports; The standard input sensors are: a push switch; a microphone; a light-sensor and an ultrasonic sensor. The standard NXT kit comes with three servo motors each with a built-in rotation sensor.
Lego Mindstorms NXT Brick
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