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A good RS232 serial learning software, and I hope to help you.
一个很好的rs232串口学习软件，希望对你有所帮助。
youdao
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If you are just learning of serial communication, it is worth to download!
如果你刚学习串口通信，一定值得下载！
youdao
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If you are just learning of serial communication, it is worth to download!
如果你刚学习串口通信，一定值得下载！
youdao