DO通道输出一个精确定时的数字波形，在板卡上轻松实现-The DO channel output a precise timing digital waveform, easily on the board

单通道输出一个数字信号，能够精确定时，在LabVIEW上实现板卡波形输出-Single channel output to a digital signal, which can accurate timing, board to achieve waveform output in LabVIEW