RFCOMM is known as the virtual serial port protocol because it allows a Bluetooth device to simulate the functions of a serial port.
RFCOMM称作虚拟串口协议(virtual serial port protocol)，因为它允许蓝牙设备模拟串口的功能。
Using CP2101 USB-UART electric circuit, the application system realized USB transfer of virtual serial port.
应用系统使用了USB-UART桥接电路，实现了虚拟串口的USB传输。
Using CP2101 USB-UART electric circuit, the application system realized USB transfer of virtual serial port.
应用系统使用了USB-UART桥接电路，实现了虚拟串口的USB传输。
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