取消工程密码专用6.51

无线模块SIM300硬件设计最新资料V4.02。可供从事学习、开发无线通信有关人员参考。(SIM300_HD_V4.02.rar)

很不错的C语言秒表程序,还带PROTUS仿真文件,直接就可以运行,调试过正常,很不错哟(C language is very good stopwatch program, but also with PROTUS simulation file can run directly, commissioning lead a normal, very good yo)

基于AT89S52单片机的超声波测距系统设计源代码(Ultrasonic ranging system based on single chip design based on Ultrasonic Ranging System source code source code source code of ultrasonic ranging system based on single chip design)

NTC热敏电阻计算器（B值、R25、指定温度、指定阻值均可计算，给定四个参数即可计算第五个参数）(NTC thermistors Calculator (B value, R25, specified temperature, the resistance can be specified calculation, four parameters can be calculated given the fifth parameter))

1602LCD工作于四位模式实时显示当前时间，本程序液晶数据端口仅使用了四只引脚,实现日期时间的实时显示.(1602LCD works in four modes display the current time, the program uses only the LCD data port four pins, date and time of the real-time display.)

3231132213213132312311233312321(32312312132321321312312132)

基于T6963C控制芯片的160_128液晶程序(This is for lcd s code!)

说明：  按键控制流水灯，使用左移右移控制流水灯闪烁，实在不知道说啥了(Key control water lamp, use left shift right to control the flow of water lamp flashing, really do not know what to say)

说明：  MAX6675的C语言控制程序和控制电路图。(MAX6675 C language control program and control circuitry.)

说明：  sketch_dec12a是arduino文件 读到上位机输出的字符串输出SD卡里面的语音信息。 sketch_dec12a是arduino文件 读到上位机输出的字符串输出SD卡里面的语音信息。(Sketch_dec12a is a string read from Arduino file to output from PC and output voice information in SD card.)