Introduction - If you have any usage issues, please Google them yourself
Established that the calculation of CH distance signal pulse, 0.1 kilometers of each cycle changes. Taxi prices starting at 3 kilometers for 7.0 yuan, more than three kilometers, 2.4 yuan per kilometer. Set up a car key, once pressed, said the stalled car, activated the first time that the car off state. A PAUSE, the suspension is to stop the charges, fees and charges once again pressed to continue. Seven-Segment code shows the current price and distance. Seven-Segment and all code for dynamic display. Who, if so, you help out, write the main program on the list