用VHDL实现了电梯的模拟程序，实现了自动判断楼层，然后根据客户需求和楼层最近原则，实现自动判断上下行，还有报警，强制开门等功能-Achieved using VHDL elevator simulation program, to determine the realization of an automatic floor, and then based on the principle of demand and the floor recently, automatically dete