采集数据用DAQ还是DAQmx？

NI推荐的是后者

哦

As long as DAQmx supports the DAQ card you are using, then it is better to use DAQmx. Before I started to use DAQmx, I had more than six-year experience of the traditional DAQ. At the first glance of DAQmx, I did not like it at all. However, in less than one month I noticed more and more advantages gradually.
Simply speaking, DAQmx is more powerful. If the traditional DAQ is DOS, then DAQmx is Windows. You decide which one is better.

DAQmx vis多态
用着也方便
btw：搭车问大牛，DAQmx里面怎么判断循环缓冲读取速度是否足够？
貌似DAQ vi有个输出端子，DAQmx呢

Are you talking about backlog? You can get the backlog using the following property node which is the same as backlog in the traditional DAQ:
DAQmx Read>>Status>>Available Samples per Channel

别人的不知道，我用的是DAQmx read-〉property-〉AvailSampPerChan来监视缓存

早知道高人回答我就不说话了-_-!

赞就是这个
以前找到过