目前流行的基于CE的设备很多都具有像导航、打电话等功能，而GPS、GSM/GPRS模块都是外置串口的终端设备，你想不用串口都不行。-Currently popular CE-based devices are like a lot of navigation, phone calls and other functions, and GPS, GSM/GPRS module is an external serial device, you do not need the serial wil