4x4矩阵键盘电子琴把“单片机系统”区域中的P1.0 端口用导线连接到“音频放大模块”区域中的SPK IN 端口上； （2． 把“单片机系统“区域中的P3....

ST7920控制器的12864液晶的测试程序，显示文字和两幅图片，按文件定义接线就可以使用-ST7920 LCD controller 12864 test procedures, display text and two pictures, according to the file, you can use the definition of cable

串行通信程序，发送不是用中断方式，接收用中断方式，适用于程序的调试，液晶显示用的是1602-Serial communication program, sending instead of interrupt mode, receive mode using interrupted for Debugging, liquid crystal display using 1602

用ATmega8单片机产生占空比可变PWM方波-ATmega8 generated by single-chip PWM variable duty cycle square wave

凌阳LED模组资料和程序-Sunplus LED module data and procedures

诺基亚FBU

C8051F52xA_53xA单片机SPI源代码驱动-C8051F52xA_53xA single-chip SPI driver source code

DDS9852开发板测试程序，此为我自买的板的源程序！-Development board DDS9852 testing procedures, since I bought this as the source of the plate!

完整的ＴＣＳ控制系统原程序．包含系统检测，数据采集（Ａ－Ｄ）与处理，通信和回路控制与检测．产品已上市．-integrity of the original control system procedures. Includes system testing, data acquisition (A-D) and processing, communication and loop control and detection. Products are listed.

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

针对于AT24CXX的IIC读、写操作的源码。-For the IIC in AT24CXX read and write operations source.