数码管显示，基于FPGA实现的数码管显示-LED display

用C语言实现电梯的模拟功能，配合FPGA的数码管及按键可以显示电梯的当前状态楼层和下一状态要去的楼层-Elevator analog functions in C language with the FPGA digital tube display and keys can lift the current state of the floor and the next state to go to floor