一份关于SD卡读写的资料，需要的就拿吧。

用 AT89C51、LED 数码管、按键、二极管等部分构成，能实现时钟日历的功能：能进行时、分的显示。也具有时钟，定时时间的设定，实现三路开关定时输出等功能。-With AT89C51, LED digital tubes, buttons, diodes and other components, to achieve clock calendar function: to carry out, the sub-display. Also has a clock, timer time setting, the realization of three-way开关定时output functions.

介绍了如何设计射频电路中的S参数，资料非常详细，有例子，不过是英文版的-Describes how to design RF circuits in the S parameter, information is very detailed, has examples, but the English version of

串口控制8路舵机程序,本程序适用于III型实验板，如有需要请与我联系-Serial 8-way steering control procedures, this procedure applies to type III board and, if necessary, please contact me

介绍OLED的显示技术的原里发展 由悠景科技公司技术人员讲解-Introduction of OLED display technology to develop the original technology companies by Univision on technical staff

开票盖章系统设计开发环境为ICC,可以编译成汇编,直接下栽到嵌入式avr单片机进行控制-drawer sealing systems design and development environment for the ICC, can compile a compendium, Embedded directly to the downward avr microprocessor control

本文件为atmel公司的at45db芯片的驱动程序实例,对于串行flash编程有帮助-this document for the at45db ATMEL chips Driver example, serial flash programming for help

按键控制发光二极管熄灭，基于凌阳单片机开发 -Button control LED is off, Sunplus based on single-chip development

基于msp430单片机的1602液晶时钟程序,并带有可调日期-Based on MSP430 MCU 1602 LCD clock procedures, and with adjustable date

单片机usb2.0通讯-the conmunication of MCU by USB2.0

LCD液晶显示器源码 keil c51 at89c51-LCD liquid crystal display source keil c51 at89c51