The Course starts with PCWorX Basics an simple program using the switches of the board as inputs and four lights tower an a DC Motor Cylinder as output. Second example combines the potentiometer on the board with the position potentiometer of the cylinder. Third example realizes a gripper program (open - forward -close - back - open) on a single controller. Course 4 is about the same problem, but uses two controllers connected over Ethernet. The other two courses are just two more applications.