Based On The Usb Bus Of Virtual Function Generator

Waveform generator is a kind of electronic instrument,which is most Widely used in measurement. Waveform generator, it is a programmable function generator,the technology of computer is used by this design.Based on the theory of C.E.SHANNON, the requirement of reconstruction of frequency limited simulate singnal is analyzed in this paper.A technology scheme of reconstruction of frequency limited simulate singal from its dispersed sample,which is based on technology of software and hardware of computers put forward. The algorithm of sample of waveform in high-speed dualport static SRAM is designed,and the virtual waveform generator is developed. The experimentation shows that the scheme is punctuality and successful. This low cost generator has high technological norms,its function is match that of product of native company nowadays.It can meet the practical use.USB interface which is widely used this day is used in this paper,which make it easy to use, free to draw and put in and quickly transmit.