Introduction - If you have any usage issues, please Google them yourself
Billing system to design a taxi: Pricing starts at 5 yuan (2km or less), 2km after the 0.8 yuan/0.5km billing refresh every 500m time, in the 8-bit digital tube, the former four digital display shows mileage the number after the price of four digital tube display (Kok, Yuen, eleven million dollars)