电容表89c52，比较精确，可以自己制作，内带pcb图

该程序实现有两个单片机进行环境温度和关照信息的采集。-The program has two microcontrollers to achieve environmental temperature and care information collection.

适合初学c55者的几个扩展定点数运算例子-suitable for the novice c55 several expansion of the fixed points Operational example

电机控制的程序例程，方便大家在座相应的工作中应用-Motor control routine procedure to facilitate the work of everyone here the application of the corresponding

MSP430 F149的单片机 ADC驱动程序，便于相应计时器的操作-MSP430 F149 microcontroller ADC drivers, easy operation of the corresponding timer

SST系列单片机的中文资料。包括用SST89系列单片机和SoftICE做软件的在线仿真,使用EasyIAP在线下载的说明,使用EasyIAP在线下载的说明,SST单片机IAP指令操作程序示例汇编语言,SST单片机IAP指令操作程序示例C语言，SST89x554-564资料,sst89x5x4Rx头文件等等，打包下载-SST Series Singlechip Chinese information. Including SST89 Series MCU and SoftICE software to do online simulation, the use of online download EasyIAP note, the use of online download EasyIAP note, SST Singlechip IAP operating procedures sample assembly language instructions, SST Singlechip IAP commands operating procedures sample C language, SST89x554-564 information, sst89x5x4Rx header files, etc., packaged download

基于单片机准双向I/O的键盘程序基于单片机准双向I/O的键盘程序-Based on single-chip quasi-bidirectional I/O keyboard procedures Singlechip-based quasi-two-way I/O keyboard procedures

对4x4键盘进行扫描并将结果送数码管显示

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

ADC0809是带有8位A/D转换器、8路多路开关以及微处理机兼容的控制逻辑的CMOS组件。它是逐次逼近式A/D转换器，可以和单片机直接接口。 -ADC0809 is an 8-bit A/D converter, 8-way multi-switch and microprocessor compatible control logic of the CMOS components. It is a successive approximation type A/D converter, single chip can interface directly.

采集数据经pcf8591的A/D转换由89S52处理在LCD显示出来的代码 C语言编写-Collecting data pcf8591 the A/D conversion by the 89S52 handle LCD display language of the code C