基于Profibus_DP现场总线的电能表设计

单片机 Keil＋proteus 并行口设计数字键盘实验 要求：掌握动态显示、动态扫描键盘的工作原理及硬、软件的设计、调试方法 掌握80C51接口硬件电路设计方法及软件编程方法 了解80C51外部中断的使用和编程方法 实验题目：并行口实现数字0~9、A~F、L、U、P、n总共20个键盘，将按键的结果用7段数码管显示出来。-Parallel Port numeric keypad test requirements: master the dynamic display, dynamic scan the keyboard works and the hardware and software design, debugging the means to acquire 80C51 interface hardware circuit design methods and software programming approach to understanding the 80C51 external interrupts use and programming methods Experimental subjects: parallel port for digital 0 ~ 9, A ~ F, L, U, P, n total of 20 keyboard, the result will be keys to use 7-segment digital tube display.

ds1302 + nokia5110的显示程序,以及ad 测量电压的程序， 以及定时器 键盘扫描. 以及L9110的 输入输出 关系. 以及eeprom的 读写. -ds1302+ nokia5110 display procedures, and ad measurement of voltage, procedures, and the keyboard scan timer. as well as the L9110 of the input-output relationship. as well as the read and write eeprom.

这是本人参加FREESCAL最牛的智能小车程序，光电组的-This is my cattle join Freescale most intelligent car procedures, photoelectric Group

温度计原理图和源码-thermometer schematic and source

AVR单片机开发的DS1302的时钟实验源程序-AVR development DS1302 single-chip clock source experiment

ht47r20遥控程序，红外线载波输出频率这系统时钟的12分频，当系统频率为480KHZ，载波频率为40KHZ-ht47r20 remote control procedures, infrared output carrier frequency system clock frequency of 12 minutes, when the system frequency for 480KHZ, carrier frequency 40KHZ

msp430f149读HC165（4片串联）。兼有串口发送程序-msp430f149 Reading HC165 (four series). Serial sent both procedures

i2c 总线 at512读写程序，适用于8051系统单片机系统-i2c bus at512 literacy procedures applicable to the 8051 system SCM System

LPCEB2000-s单片机rtc的控制程序，希望对大家有所帮助-LPCEB2000-s single-chip rtc control procedures, and they hope to help everyone

电子屏字符显示器程序-electronic display screen characters procedures