手机AT指令集，用来开发数据线或者红外线连接手机的程序，AT指令和最早的那种给Modem通讯的指令很像，不过这个是给手机用的而已。-Mobile AT command set used to develop the data cable or infrared to connect cell phone program, AT commands and the first kind of instruction to the Modem communication like, but this