本实验是基于VHDL设计一个地铁自动售票系统。该系统能一次出售最多9张票，并实现找零、显示、出票、取消等功能。划分为控制模块、计算模块、分频模块、出票模块、显示模块等5个功能模块。-The experiment is based on the VHDL design a subway automatic ticketing system. The system can be a maximum of nine tickets sold, and to achieve homing, show t