Introduction - If you have any usage issues, please Google them yourself
The procedure for measuring the alternating current frequency, voltage, current compilation of the three parameters of single-chip source, microcontroller 89s52 compiled using the platform can be KEIL2 or WAVE6000. This is my first item of work, huh, huh, even though it is a compilation of the basic use of C now, but still wish to use or understand a little bit with the compilation of a person.