hongwai-lcd.c

本作品以MSP430单片机为核心， 基于DDS原理，通过查表方式输出步进量为10HZ，频率为100HZ~2KHZ的正弦波。两路被测信号通过过零比较、异或和低通滤波整流，实现了对相位差的测量，误差小于(This works with MSP430 microcontroller as the core, based on DDS principle, by look-up table output step sizes for the 10HZ, frequency of 100HZ ~ 2KHZ sine wave. Two by the signal zero-crossing comparator, XOR, rectification and low-pass filtering, the realization of the phase of the measurement error is less than)

一个键盘监视小程序,可以读取任何键盘输入,并保存到C:CONIO.TXT文件中(a small keyboard surveillance procedures, can read any keyboard input, and the preservation of the C : CONIO.TXT document)

单片机的计时器PWM模式实例代码，希望给相关的人员带来帮助。(Single chip timer mode PWM code examples, hope to the related personnel to bring help. )

一个可以控制电机的程序 能主管的显示数据(One can control the electric charge of the program can display data)

菜单编程操作的源代码，有助于对菜单的理解。。(Menu programming operation of the source code, contribute to the understanding of the menu. .)

本程序基于单片机实现RTC实时时钟，简单易懂(The program is based MCU RTC real time clock, easy to understand)

电子密码锁设计，实现四位密码开锁，可改密码(Electronic password lock design to achieve four bit password lock, password can be changed)

AD9851中文资料，为pdf格式，资料比较详细，希望对需要者有所帮助。(AD9851 Chinese data)

说明：  51单片机开发，AD转换模块 ，模数转换，高精度(51 MCU development, AD converter module, analog-to-digital conversion, high-precision)

单片机键盘接口，可以用于单片机使用键盘,省去很多时间(PS/2 jian pan jie kou cheng xu )