Hex file for PIC16F84A to control a GSM cellular phone with a home alarm

MD231 可编程gprs/gsm模块比较全面参考程序:包括(7bit/8bit/16进制)短消息收发，gprs tcp/udp数据传输框架,nvram存储参数读写,通过AT通道获取来电号码,小区cellid等.-MD231 programmable gprs/gsm module is more comprehensive reference program include: (7bit/8bit/16 hex) short messaging, gprs tcp/udp data frame

For the master IC with 40 pins, it s 89C51 There are also com-port and 7805 as you can see the footprint Stuff of 4-pins button is for the hex keypad Resister pull-up and led can easily be recognized by their footprint I lost my schematic for