PCF8563T读写功能程序（原创）

12864液晶显示器的测试程序，汇编语言的，很有价值的！-12864 test procedures for liquid crystal displays, assembly language, and great value!

一个汉字全自动检索软件，包含源代码以及字库-a Chinese automatic retrieval software, including source code and font

南京沁恒公司CH375标准版的C语言源程序-Nanjing Qin Heng Company CH375 Standard Edition C-language source code

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

如何在硬件条件允许的情况下在C语言中使用双数据指针提高程序的执行效率,文章还给出了例子程序.-How to hardware conditions permit in the C language using a dual data pointers improve efficiency in the implementation process, the article also gives examples of the procedure.

keil里面的例子，看看把-example, to see if the he

采用DDS 技术实现了基于DSP 的模拟调制实验模块。包括系统的硬件和软件设计,模拟调制原理,DSP实现模拟调制的方法,同时采用单象限正弦波形存储器结构对DDS 模块进行了改进,提高调制器的性能。-DDS technology using DSP-based implementation of the experimental module Analog modulation. Including system hardware and software design, analog modulation principle, DSP Analog modulation methods of implementation, while a single-quadrant sine wave-shaped structure of the DDS memory module has been improved to enhance the performance of modulator.

这是用PIC芯片处理USB的源代码,包括初始化USB，中断设置等，是汇编语言入门USB操作的很好参考程序！-This is the PIC chip USB source code, including the USB initialization, interrupt settings, assembly language entry USB good reference operating procedure!

atmega16 用pwm 产生正弦波 示波器观察ok-ATmega16 generate sine wave using pwm oscilloscope observation ok

摘要 文中提出用DDS芯片AB9852实现QAM数字调制的新方法，扩展AB9852在数字调制方面的应用。 。 ． 关键词 QAM调制 单片机 DDS -Abstract In this paper, using DDS chip QAM digital modulation AB9852 realize the new method, the expansion of AB9852 in the digital modulation applications. . . Key words single-chip QAM modulator DDS