明天要去用英文描述自己的项目，请大家指教！多谢多谢！
1、A signal generator for “High voltage switch tester”
It contains three parts: the module of trigger, micro controller, signal generator. The microcontroller out puts 12 signals, and a 555 ic puts out a pulse with tunable frequency.
I have developed 3 version programs running on this PCB.
2、A microphone control system of conference:
This is a communication system of multi-node inter communication. It based on RS232. there are two wireless module(2.4G) in each slave microphone, the one is a sending module, the other is a receiver. And each slave’s sending has a matching receiver built in the central controller. From this project, I learned the synthesis application of serial communication, as well as the communication format and verification.
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