Spectrum-analyzer

说明：  简单的流水灯控制和外部中断程序和键盘指针的应用(Simple light control and external interrupt water program and the application of the keyboard pointer)

通过51单片机设计一个电子时钟，精确到秒，可以通过按键调节时间(By 51 microcontroller design an electronic clock, accurate to seconds, you can adjust the time by pressing a button)

数控五轴速度后置处理源程序，实现速度后置处理(post progress)

实现对气体流量表的基于音速喷嘴的自动检定(testing for the gas flow meters based on stangdard acoustic nozzles)

能从SD卡读取MP3文件，并且识别后通过LD3320播放MP3，具体使用只需新建一个.ini系统文件存在sd卡，在里面设置好关键词并且所需播放的MP3文件即可(Read MP3 files from the SD card through the LD3320 play MP3 and identify specific use simply create a new the ini system files sd card exists inside set keywords and required to play MP3 files can)

用C语言对LED灯进行测试 通过实际按下键盘进行测试笔(the test of LED with C language and the keyboard is a necessity )

51单片机数码管静态显示，计数器功能，学习如何对数据管进行操作(51 MCU digital static display, the counter function, learning how to operate the data management)

宽频放大器,有以下功能: 预置增益,增益加/减,显示输出电压有效值,自动增益 显示有效值. 增益输入及加减 自动增益没有实现(Wideband amplifier has the following functions: Preset gain, gain plus/minus, the display output voltage RMS, automatic gain display rms. AGC gain input and subtraction is not implemented)

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.)

AVR128显示部分，用12864作为显示的程序代码，已经调试通过(AVR128 display section, with 12864 as display the program code, have debugging through)