1602的显示程序，根据89c51而成，可以修改供自己使用-1602 display program, according to 89c51 formed

基于51单片机设计的1602电子密码锁的protues仿真资料加原程序-Based on 51 single-chip design of 1602 electronic locks protues simulation data plus the original program

89c51控制GSM模块，用ds18b20接收温度信息，实现短信收发，1602液晶的显示-89c51 control GSM module with ds18b20 receives temperature information, to messaging, the liquid crystal display 1602