基于U2270B和AT89S52的125K射频识别的PCB板子的原件protel打开的,U2270B and AT89S52 based on radio frequency identification of the PCB board 125K of the original open protel

基于gsm的51单片机控制系统含代码及综合的pcb参考图及详细的温度传感器ds18b20,液晶1602的详细资料及编程-Gsm-based control system of 51 single-chip code and integrated with pcb detailed reference maps and temperature sensor ds18b20, detailed information on LCD 1602 and programming

U2270B开发板的PCB图，可以画开发板。

703U2270B读取RFID卡号的范例,包括源代码及PCB图-U2270B