普通IO口模拟串口与语音模块SYN6288通信，已成功通过测试，可以使用-Ordinary analog IO serial voice module of SYN6288 communication, has successfully passed the test, you can use. . .

51系列单片机普通的IO 口模拟串口通信，已经过测试，可以直接使用-51 Series single-chip analog IO serial communication, has been tested, and can be used directly. . .