MP3

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)

说明：  本PDF文件为市电电压频率测量计的设计说明书！从中能了解相关的电路设计(The PDF file is mains voltage frequency meter design manual! From which to understand the relevant circuit design)

详细描述了基于ADSP-21262的数字压限器的设计，给出了算法流程，可以根据其描述进行实现(A detailed description of the ADSP-21262 digital limiter based design, flow chart of the algorithm is given, according to the description of implementation)

c51的单片机智能小车 具有红外循迹 超声波避障 以及hc06手机蓝牙遥控的功能(auto car)

CD4051/CC4051是单8通道数字控制模拟电子开关，有三个二进控制输入端A、B、C和INH输入，具有低导通阻抗和很低的截止漏电流。(CD4051/CC4051 is single channel 8 digital controlled analog electronic switch, there are three binary control input A, B, C and INH input, has low conduction resistance and very low by leakage current.)

51单片机程序，两个74HC595驱动8位数码管程序，串行输入，3个IO口控制8位数码管动态扫描(failed to translate)

三星94c8芯片写的线控器显示屏，TM1640，模拟串口(Samsung 94 written c8 chip line controller display, TM1640, simulate the serial port)

说明：  描述了AD9850、AD9851、AD9854、AD9833的调试心得(Describes the AD9850, AD9851, AD9854, AD9833 debugging experience)

对矩阵键盘的程序编写，详细地讲述了如何扫描键盘的输入！(The matrix keyboard programming, detailed tells the story of how to scan the keyboard input!)

定时器：设定时间格式（00：:00）后，到时间弹出提示(timer：set time(00:00),then run up)