PWM-out

说明：  一本讲述proteus与51单片机仿真的书(A book about the simulation of Proteus and 51 single chip computer)

Cadence Allegro package tools.

基于单片机的数字密码锁设计，六位密码同时有密码修改和LCD显示功能。(Six password combination lock design based on single chip microcomputer, at the same time have a password to modify and LCD display.)

strus开发 短租网,一个小项目，功能不是太完整，但是基本差不多了(a project of struts a project of struts a project of struts a project of struts a project of struts a project of struts)

说明：  说明： stm32-超声波避障，提供一套源码，供开发者参考。(Description: STM32 - ultrasonic obstacle avoidance, provides a set of source code for developers to reference.)

说明：  提供了AD7606采集数据的例程，传输模式采用SPI模式(AD7606 data collection routine is provided, and SPI mode is adopted in transmission mode)

C51音乐程序(八月桂花) [功能] 通过单片机演奏音乐 //本例采用89C52, 晶振为11.0592MHZ //关于如何编制音乐代码, 其实十分简单,各位可以看以下代码. //频率常数即音乐术语中的音调,而节拍常数即音乐术语中的多少拍 (C51 music program (August Osmanthus) [function] through Singlechip music// this case, using 89C52, crystal for 11.0592MHZ// on how to prepare music code is actually very simple, you can see the following code.// Frequency music terminology that is constant in tone, and the beat of music terminology that is constant in the number of pictures)

通过温度传感器获得温度值，并设定温度值，在温度值大于设定值时，单片机驱动风扇，降温。(The temperature value is obtained by temperature sensor, and the temperature value is set. When the temperature value is greater than the set value, the single chip computer drives the fan to cool down.)

说明：  摄像头OV7670模块调试资料，硬件参考电路、51、STM32源码。(Camera OV7670 module debugging data, hardware reference circuit, 51, STM32 source code.)

、支持mp3, wma, wav, mid SF0播放 2、支持三种播放模式：单曲重复，全曲重复，乱序播放 3、支持任意文件夹文件的播放（注：总文件夹数不大于136个） 4、支持完整歌词显示（GBK超大字库，支持简繁体，推荐歌词形式为多个时间tag复用歌词的形式） 如 [00：12][00：35][00：56]歌词1 对时间tag没有要求，总之就是完全符合规范。 5、6个按键，next,prev,V+,V-,(PLSY/PAUSE),mode/BL 6、支持2G以内sd卡 (, Support mp3, wma, wav, mid SF0 player 2, in support of the three player modes: single, repeat, all song repeat, out-of-order player 3, support for arbitrary file player folder (Note: the total number of folders is not more than 136 ) 4, to support the integrity of the lyrics display (GBK large font, to support simplified and traditional, the form of a number of recommended time lyrics tag reuse the form of the lyrics) in the case [00:12] [00:35] [00:56] lyrics 1 tag does not require time, a word that is in full compliance with the norms. 5,6 a button, next, prev, V+, V-, (PLSY/PAUSE), mode/BL 6, within the sd card support 2G)