c语言编程的8位密码锁，用Protues进行仿真，效果不错

51单片机P2口接4*4键盘的行线和列线；红灯亮时进行频率输入；绿灯亮时进行占空比输入；频率值暂定在100到60KHZ之间；输入频率和占空比时要输够六位整数，不够的在前面补0；占空比以百比数（0-100）形式存在。-51 Singlechip P2 mouth then 4* 4 keyboard line and column line red light when the frequency of input green when the input duty cycle frequency value is tentatively scheduled for between 100 to 60KHZ input frequency and duty than enough to lose six integers, not enough to fill in front of 0 duty cycle than a few hundred (0-100) form.

16位10进制除法程序，KEIL51编写，适合单片机运算-16 10 M division procedures, KEIL51 prepared for single-chip computing

H4100射频卡驱动程序，该程序应用久经考验-H4100 RF card driver, the application of tried and tested procedures

* BL-TFT240320-BOARD 2.8/3.2" board * LCD 240x320 3.2-inch QVGA 262k TFT-LCD module * Resolution of 240RGBx320 dots * 262k TFT Color LCD * LCD driver is SSD1289 * Touch screen controller ADS7843 * SD card slot with led card insert detection * SPI pin interface * ARDUINO pin support * Black light control with hardware or software control * 8/16-bit interface for microcontrollers * 40 pin Interface * Power input voltage 5Vdc * Frame Cover * Dimensions:68mm x 97mm - * BL-TFT240320-BOARD 2.8/3.2" board * LCD 240x320 3.2-inch QVGA 262k TFT-LCD module * Resolution of 240RGBx320 dots * 262k TFT Color LCD * LCD driver is SSD1289 * Touch screen controller ADS7843 * SD card slot with led card insert detection * SPI pin interface * ARDUINO pin support * Black light control with hardware or software control * 8/16-bit interface for microcontrollers * 40 pin Interface * Power input voltage 5

SHT71数字温湿度传感器的AVR单片机驱动程序-SHT71 digital temperature and humidity sensor AVR Single Chip Driver

单片机实现液晶显示程序，对初学者，比较实用-the mcu for lcd display

MSP430技术培训讲义资料，是学习TI 单片机的绝好资料。-MSP430 lectures and technical training information, is an excellent learning TI Single Chip information.

PWM信号在单片机中的应用, 可以在KEIL 2环境下编译-PWM signal in the MCU application environment can be compiled in the KEIL 2

protel元器件TQFP-44封装。做好的封装，可以直接用于PCB的绘制！-protel components TQFP-44 package. Do a good job of packaging, can be directly used for PCB drawing!

单片机控制液晶显示汉字的程序-SCM Chinese character LCD control procedures