Application of multithreading in virtual digital storage oscilloscope development

In the course of program development for virtual digital storage oscilloscope (DSO), if single thread programming technique is employed, there usually exist shortcomings of slow responding of software panel or control and unstable display of waveform. To solve this problem, based on the analysis of working principles of DSO, this paper introduced multithread technology to realize functions of signals acquisition, parameters setting and signals displaying, and experiments show that better control and display effect can be obtained.