C8051F控制GPRS短信息模块的原理图,好不容易才弄到手的-C8051F GPRS short message control module diagram, that it was the only into their hands

按键程序，带按键扫描，时间中断的功能。爱爱爱 琐琐碎碎 爱爱爱飒飒 -Key programs, with key scan, time interrupt function. Ai Ai Ai Ai Ai Ai Suo trivial pieces Sasa