假设饮料只有一种价格为2.5元，硬币有0.5元和1.0元两种，考虑找零，用Verilog描述其控制电路，并用FPGA实现-The assumption that only one type of beverage price of 2.5 yuan and 0.5 yuan coins have two kinds of 1.0 yuan to consider give change, using Verilog descr iption of its control circuits, an