89c51单片机控制西门子TC GSM模块收发短信。注意晶振频率为11.0592M。-89c51 SCM control Siemens TC GSM module send and receive text messages. Note that oscillator frequency 11.0592M. .

用89c51模拟GPS接收机。串口发送信号-Simulation of GPS receiver with 89c51. Serial port to send signal

一款采用1602液晶+89c51的4种版本GPS数据解析HEX文件（内含电路图）-A 1602+89 c51 using the four versions of the GPS data analysis HEX file (containing the circuit diagram)