一个方便的嵌入式（ARM）平台上的AT指令测试工具，可用于测试各种3G模块，已在S3C2440、AT91SAM9260上测试通过。编译时运输行解压目录的 tt脚本-A convenient embedded (ARM) platform, the AT command test tool for testing a variety of 3G modules in S3C2440, AT91SAM9260 on the test. Transport line when compiling th

Tt is a Keypad Scan with atmega 16 + proteus file + C program