电子密码锁源码，VB》NET，加硬件键盘可工作

在电子技术中，频率是最基本的参数之一，又与许多电参量的测量方案、测量结果都有十分密切的关系，因此频率的测量就显得更为重要。测量频率的方法有多种,其中电子计数器测量频率具有精度高、使用方便、测量迅速，以及便于实现测量过程自动化等优点，是频率测量的重要手段之一。在本次毕业设计中我们选择使用单片机来制作数字频率计，并在实际制作中采用了直接测频法。利用延时产生的时基门控信号来控制闸门，通过在单位时间内计数器记录下的脉冲个数计算出输入信号的频率，最终送入LCD中显示。这样制作出来的频率计不仅可以满足设计题目的参数要求，而且具有了单片机的稳定性和成熟性，且控制能力强，是一种低成本，高可靠的设计方案。-In electronic technology, the frequency is one of the most basic parameters, but also with a number of electrical parameters of the measurement program, the measurement results have a very close relationship between the frequency of measurement, therefore it is even more important. Measurement of the frequency of a number of means, electronic measurement of the frequency counter with high precision, easy to use, rapid measurement, and measurement is easy to realize the advantages of process automation is an important means of measuring the frequency of one. Graduates in this design we have chosen to make use of single-chip digital frequency meter, and used in the actual production of a direct

使用51单片机用算法的方式来产生SPWM的程序-Use 51 MCU way to use the algorithm to generate SPWM program

单片机 LCD12864显示演示程序-Singlechip LCD12864 show demo

关于ADuC845中URAT功能所写的小程序-On the ADuC845 in URAT function of small programs written by

ADUC845单片机的一些C程序，包括AD、DA 、定时器等-ADUC845 SCM some C procedures, including AD and DA, timers, etc.

基于51系列单片机的串口通信测试程序，希望对大家有帮助-Based on 51 Series Single-chip serial communications test program, and they hope to have everyone help

红外遥控编码资料，非常详细，值得参考，里面包括了很多遥控器的编码信息-Infrared remote control coding information, very detailed, it is also useful, which includes a lot of remote control coding information

基于c51开发的串口通讯程序。方便c51和电脑通讯-Developed based on the C51 serial communication program. C51 and computers to facilitate communication

基于DS12R885的时钟芯片的单片机程序 很具有参考价值-DS12R885-based single-chip clock chip is a reference value of the procedure

汽车领can总线通讯程序，请大家用的时候最好有can总线的知识-Automotive collar can bus communication program, the best time for everyone to use the bus can have the knowledge