基于STC89C58的单片机控制DDS程序，包括键盘 显示等。

由8051设计的单片机数字钟，包括具体流程和相干程序-design from the 8051 microcontroller digital clock, including specific processes and procedures Coherent

利用8051单片机驱动H6152射频读写模块，实现对非接触式射频卡的读写操作。-8051 drivers to use radio frequency reader module H6152, to realize non-contact RF card read and write operations.

Fairchild公司的二极管，三极管原理图库(protel)-sch.lib about Fairchild s Semiconductor(TTL)

一个4X4的键盘程序设计，希望能对大家有一定的帮助-A 4X4 keyboard programming, I hope everyone can have some help

基于AVERLOGIC公司的AL37204的多路车载分割器-AL37204-based company

蜂鸣器911报警(汇编),单片机的定时器根据声音的频率来设计-Alarm buzzer 911 (compilation), single-chip timer in accordance with the frequency of the sound design

430的SD16模块扩展到20bit采样精度的范例-430 extended to the SD16 module 20bit sampling accuracy of the sample

当前LCM的主流接口有并口和串口。并口引脚多，产生串扰，串口则没有诸如此类的缺点。SPI作为串口家族的一员，具有高速同步、芯片管脚少和信号稳定不产生串扰等优点，越来越受到开发人员的青睐。但是，具有SPI的LCM并不是毫无缺点的，市场上以COG(chip on glass)方式封装的LCM大都是基于单工方式传输的，这将给开发带来了非常大的麻烦。本文主要论述基于单工SPI的GUI开发方案，详细地分析了基于单工SPI的GUI的开发开台，论述并分析在GUI开发过程中遇到的问题，最后提出增加虚拟LCD的方案解决这个问题。-err

串口扩展芯片，可以扩展单片机的串口，使单片机的串口由一个变为3个甚至更多，降低成本。

* BL-TFT240320-BOARD 2.8/3.2" board * LCD 240x320 3.2-inch QVGA 262k TFT-LCD module * Resolution of 240RGBx320 dots * 262k TFT Color LCD * LCD driver is SSD1289 * Touch screen controller ADS7843 * SD card slot with led card insert detection * SPI pin interface * ARDUINO pin support * Black light control with hardware or software control * 8/16-bit interface for microcontrollers * 40 pin Interface * Power input voltage 5Vdc * Frame Cover * Dimensions:68mm x 97mm - * BL-TFT240320-BOARD 2.8/3.2" board * LCD 240x320 3.2-inch QVGA 262k TFT-LCD module * Resolution of 240RGBx320 dots * 262k TFT Color LCD * LCD driver is SSD1289 * Touch screen controller ADS7843 * SD card slot with led card insert detection * SPI pin interface * ARDUINO pin support * Black light control with hardware or software control * 8/16-bit interface for microcontrollers * 40 pin Interface * Power input voltage 5