单片机中的定时器模块，在CVAVR中已实现。

视觉暂留，编程从一个I/O口输出一扫频信号，驱动一支LED灯闪动，频率范围为10HZ~99HZ，扫描时间为30秒，在LED闪动期间观察，一旦发现无法识别LED灯闪动时，按下按键K1，立即停止输出，并将此时的信号频率显示在数码管上，该信号的周期为测试者的视觉暂留时间。-Persistence of vision, programming from an I/O port outputs a sweep signal to drive an LED light flashing, the frequency range of 10HZ ~ 99HZ, scan time of 30 seconds, the LED flashing during the observation, once found it impossible to identify the LED lights flashing, press the key K1, immediate cessation of the output, and at this time the signal frequency displayed on the digital control on the test cycle of the signal" s persistence of vision time.

基于LCP21xx的频率测量程序，通过LCD1602显示，附带Proteus仿真电路图，是学习ARM和1602的好东西-LCP21xx based on the frequency of measurement procedures, through the LCD1602 display, incidental Proteus simulation schematics, ARM and 1602 to learn the good things

51单片机控制ISD1420实现选段播放功能的实现-ISD1420 single-chip implementation of 51 selections to control playback of the implementation

51单片机实现红外键盘的解码，红外发射芯片61-51 single-chip implementation of the decoding infrared keyboard, infrared transmitter 6122

本单片机开发例程含有电路图及C语言，有一定的参考价值-Containing the single-chip circuitry to develop routines and C language, the value of some reference

《C8051F系列单片机开发与C语言编程》一书的光盘。 1.1例 程 “例程”文件夹中为各章节的程序代码，均在作者的目标板上（自行开发）调试通过，以确保程序正确。 1.2 原理图及pcb封装

FAT32文件系统在51单片机上实现，CPU类型是sst89c58-FAT32 file system in the 51 SCM to achieve, CPU type is SST89C58

功能： 1、作为主机通讯采集两路下位机数据并将此数据通过8255送出（十路水位值） 并计算水头送STC板 2、采集数据为BCD码制，先转换成二进制，处理后再转换成BCD 3、通讯采用方式3，多机通讯，上位机发地址时TB8=1，其他TB8=0 下位机SM2=1，RB8=1时产生中断后使SM2=0收发数据，结束后SM2=1 在此系统中本机硬件地址要设为0-Features: 1, as the host of two-way communication acquisition of data-bit machine and send this data through 8255 (the road level 10 value) and calculate the head sent to STC board 2, for BCD code data collection system, the first converted into binary, and then deal with the conversion into BCD 3, communication using methods 3, multi-machine communications, address PC made TB8 = 1, other TB8 = 0 under the digital machine SM2 = 1, RB8 = 1 when the failure to make SM2 = 0 to send and receive data, after the end of SM2 = 1 in this system to the local hardware address set to 0

FM25040的C51驱动程序，用于掉电保存数据。-FM25040 the C51 driver, save the data for the brown-out.

双音频解码器MT8870的驱动，用串口接收数据，可从串口调试器查看接收的数据-dual audio decoder di drives with Serial receive data from the serial debugger view of the data received