单片机四通道模拟信号采集与显示系统，系统具有四路顺序循环采集与指定某一路采集的功能，且能通过显示屏显示出通道数和电压值。-Single-chip four-channel analog signal acquisition and display system, the system has four order cycle acquisition and specify a way acquisition functions, and can display shows the number of channels and voltage values.