In this project we will simulate a binary counter with 6 LEDs and 2 buttons for adding and subtracting. More information about counting in binary can be found. here. The library will communicate with the Arduino Simulator thought the serial USB port.
Select the used inputs and outputs on the simulator, in this case we will use a button on digital pin 12 for adding and a button on digital pin 13 for subtracting, the 6 LEDs will be connected on pin 2, 3, 4, 5, 6 and 7. Drag the parts into the workspace and connect the Arduino with the COM port in the simulator.