STM32电路图，有原理图和PCB，稍微处理即可直接去制作。

目前市场上有很多语音录放系统，如录放音玩具、录音笔等，大多采用了单片机控制一个语音芯片，再接一个FLASH存储器的结构。单片机可以控制录放时间，选取特定时间段的播放以及单多声道的录放，容易通过改变外接存储FLASH改变录放时间。 我们做的是一个简单模型，只能录放。 只需要录音和放音时的外部 ROSC 端振荡电阻不同就能改变声音的录入和播放速度，录入的时间越短音质越好，录入的时间越长音质越差 它采用模拟量直接存贮技术，因此保真度高，音质好 -Currently on the market there is a lot of voice recording systems, such as sound recording toys, sound recording pens and so on, most of the single-chip microcomputer to control the use of a voice chip, making the structure of a FLASH memory. Single-chip microcomputer can control the playback time, select a specific period of time many of the players, as well as single-channel recording, easy to FLASH memory by changing the external playback time change. We make a simple model, only playback. Required only when the recording and playback-side oscillation of the external resistor ROSC will be able to change different recording and playback of sound speed, the shorter the time of admission, the better sound quality, longer recording sound worse using direct ana

51单片机控制通过串口控制多个七彩LED灯.-51 single-chip control through the serial port to control a number of colorful LED lights.

用C语言写的红外遥控解码程序，，，， 语法上没错，但解码完成后有错，，没个按键的都一样，，不知道什么问题，望指点，，EMAIL:wjsjdeng@sina.com.cn-C language to write the infrared remote control decoder,, the grammar is correct, but after the completion of decoding wrong, not a button are the same, and do not know what, look a spot, EMAIL : wjsjdeng@sina.com.cn

c51读取gps并电台通讯的源代码-read a GPS and radio communications source code

在proteus可以实现国际象棋功能！！ ！1-Proteus can be achieved in the chess features! ! ! 1

VGA视频2*2分配器图纸，protel 99制作。 -VGA Video 2* 2 Distributor drawings, Protel 99 production.

设计使得原本需要14个IO接口的键盘显示少用了9个单片机IO接口,虽然该设计的优势在本实验中没有完全体现出来,但若在现代工业设计中应用此方案,在对引脚需要较大的产品中其优点将体现得淋漓尽致。.-Design makes the original needs 14 IO interface shows the use of a keyboard 9 Singlechip IO interface, although the advantages of the design in this experiment did not fully reflected, but in modern industrial design in the application of this program in the pairs of primers Products feet larger in its merits and will be reflected most vividly. .

PS/2口向PC发送键盘信息；并通过UART发送-PS/2 keyboard I send information to the PC and sent through the UART

我是用89S52做的模拟路灯控制系统。这个作品我在09年的全国大学生电子设计竞赛中获全国一等奖。-I used to do analog 89S52 lights control system. This work was in my 2009 National Undergraduate Electronic Design Contest won a national first prize.

C51汇编必做试验7 -- 通过串行口与PC机通信（上位机控制的必备）-C51 compilation of tests must be done 7- through the serial port with the PC, communications (Host Computer Control Essential)