利用 AT89S51 单片机的 P0 端口的 P0.0 － P0.7 连接到一个共阴数码管的 a － h 的笔段上，数码管的公共端接地。在数码管上循环显示 0...

程序匠人的一片有关于按键的文章，十分经典，按键的规划，分类,"长按"“短按”-Program artisans an article on the button is very classic, key planning, classification, " long press" " Short Press" and so on

步进电机单片机驱动程序-stepping motor driver program

51单片机与PC机的串行通信中的程序原代码。-51 microcontroller and PC serial communication of program source code.

频率计 等精度频率计 可以用于频率测试的等精度频率计 可用的-Such as precision frequency meter frequency meter can be used for the frequency of tests, such as precision frequency meter available

凌阳的液晶驱动 61板，大家自己看看吧-Sunplus LCD driver 61 boards, we could see for himself now

利用89S51单片机，通过DS18B20温度传感器测得当前的温度值，再送入4位8段数码管显示-Using 89S51 microcontroller, temperature sensor, through DS18B20 measured current temperature value, and then into four 8 digital tube display

通过对鼠标底层通信原理及协议的深入分析，探讨了鼠标在单片机系统中的应用价值与可行性，并介绍了鼠标接口软件设计的原理及方法，给出了单片机与Microsoft鼠标的具体接口程序。-bottom of the mouse Communication Theory and in-depth analysis of the agreement to explore a mouse in the SCM system of value and viability, and introduced a mouse interface software design principle and the method of the SCM and Microsoft mouse interface to the specific procedures.

单片机C语言编写的电子密码锁，可以自己设置密码-Single-chip C language electronic locks can be their own password

采用步进电机模拟洗衣机电机，实现上水、浸泡、洗涤、漂洗、甩干等过程。洗涤分弱洗、轻洗、强洗；可设定3级水位设定，每级水位均设定水位下限（值自定）；可选择漂洗次数（3~5次）。使用键盘进行流程及参数设定及自动存储流程，设定暂停键，可暂时停止洗衣机的工作，恢复后按原设定程序继续进行，同时设定停止键，可终止洗衣机的工作，并在LED或LCD上显示当前流程。-Simulation using stepper motors washing machine motor to achieve Sheung Shui, soaking, washing, rinsing, drying and other processes. Washing sub-weak wash, light wash, strong wash can be set to three water level settings, set the water level in each grade level were lower (the value of self-set) optional rinsing times (3 ~ 5 times). Using the keyboard processes and parameter settings and automatic memory processes, set pause button to temporarily suspend the work of washing machines and restore original settings after the process to continue at the same time set the stop button, may terminate the work of washing machines, and LED or the LCD displays the current process.

等精度频率计，用Xilinx FPGA和51单片机实现-Precision frequency meter, etc., using Xilinx FPGA and 51 MCU