精度为20位的数模转换芯片CS5503数据手册，有需要的朋友可以下来...

51单片机驱动GSM模块（WaveCom Q2403A）C语言源码-51 GSM module (WaveCom indoor) C language source code

基于easyarm2200的混合HID设备（鼠标+键盘）-Easyarm2200 based on a mixture of HID devices (mouse+ Keyboard)

液晶显示器以其微功耗、体积小、显示内容丰富、超薄轻巧的诸多优点，在袖珍式仪表和低功耗应用系统中得到越来越广泛的应用。 这里介绍的字符型液晶模块是一种用5x7点阵图形来显示字符的液晶显示器，根据显示的容量可以分为1行16个字、2行16个字、2行20个字等等，这里以常用的2行16个字的1602液晶模块来介绍它的编程方法。 -LCD display with its micro-power consumption, small size, display rich content, ultra-thin lightweight many advantages, in the pocket instrumentation and low-power applications are more and more widely. Here introduce the character LCD module is a 5x7 matrix used to display graphics characters liquid crystal display, according to show that the capacity of one line can be divided into 16 characters, 2 lines 16 characters, 2 lines 20 characters and so on, here commonly used 2 lines 16 characters LCD module to the 1602 introduction of its programming method.

AD9850 DDS控制子程序 经常做其他的单片机实验，还没做过DDS的实验。最近打算写个程序试验一下。 -AD9850 DDS control subroutine Singlechip often to do other experiments, not yet done DDS experiment. The recent plan to write a program to test.

液晶模块LCD1602中文资料。有需要的朋友请下载-Chinese information LCD1602 LCD module. Friend in need, please download

基于凌阳单片机和DS18B20的语音温度计设计的源代码-Sunplus based on SCM and DS18B20 voice thermometer designed source code

这是一个关于数码管移动的程序，非常好用，适合于初学者-This is a movement on the digital control program, very easy to use, suitable for beginners

lcd液晶显示的功能操作和汉字显示 分别为第一行，和第二行-LCD operation and the function of Chinese characters were shown the first line, second line and

按键扫描 51单片机加8279 8279通过74LS 138译码器扩展4×4键盘、6位显示器。 由3-8译码器对SL0～SL2译出键扫描线，由另一3-8译码器译出显示器的位扫描线，并采用了编码扫描方式。 为了防止出现重键现象，扫描输出线高位SL3不参加键扫描译码。CPU对8279的监视采用了查询方式，故8279的中断请求信号IRQ悬空未用。 -Scan button 82,798,279 plus 51 single-chip decoder 74LS 138 through the expansion of 4 × 4 keyboard, the display 6. From 3-8 decoder SL0 ~ SL2 translated to the key scanning line, by another 3-8 decoder translated display scan line, and uses code scanning. In order to prevent the emergence of the phenomenon of re-key, scan the output line does not take part in high level SL3 scan decoding keys. CPU on the 8279 surveillance using the query mode, the 8279 interrupt request signal IRQ left unused.

2.4G无线模块nrf2401配置的小程序! [nrf2401-source-code-for-AVR-8515.rar] - 这是NORDIC公司NRF2401基于AVR单片机的程序源代码-2.4G wireless module nrf2401 small allocation procedures. [Nrf2401- sourc e-code-for- AVR-8515.rar]- This is NORDIC company NRF24 Based on AVR 01 of the source code