A virtual sequential pulse generator is designed based on the LabVIEW software and data acquisition card,which can be applied to the laser cooling atom experiment to realize the computer auto-control to cooling light,magnetic field,re-pumping light,probe light and CCD.The adjustment accuracy of the delay time and pulse-width of the sequence pulse is less than 1 μs.The experiment shows that it is able to greatly improve the process control reliability and debugging efficiency of the cold atoms ex...