The NXT by Lego is a programmable robotics kit that is available in two versions: the retail version and the education base set. It usually comes with the NXT-G programming software but a number of other languages can also be used such as NXC, NBC, RobotC, and BricxCC. A new version of the set features advanced colour sensors and many advanced capabilities. The kit’s main component is a brick-shaped computer called, appropriately, the NXT Brick.
NXT 8094 Plotter
This computer can receive input from a maximum of four sensors and it can control three motors through registered jack cables. It has a 100×64 monochrome LCD display and four buttons which can be used to navigate the user interface. It has a speaker which can play sound files as well.