该源码采用标准c编写，使用SPI方式访问SD卡。

35个51单片机使用的c51程序，在keil 环境下开发-35 51 Singlechip C51-use procedures, the development environment in keil

C8051F020的头文件，主要是本单片机的硬件地址指向等。-C8051F020 the first document, is the MCU hardware addresses at the other.

关干高速PCB设计的设计技巧，PCB硬件开发指南。-Dry off the design of high-speed PCB design techniques, PCB hardware development guide.

用SD模式读SD卡的代码,写功能尚未实现,希望能给您一点帮助!-SD mode with SD card code reading and writing function has not yet been achieved, I hope to give you a little help!

简单的"祝你生日快乐"歌曲 芯片为mega8-A simple

CAN通讯 有源程序 很好 大家来看看 SJA1-CAN communications have a very good source to look at the U.S. SJA1

有关于pwm控制的一个例子,基于8051f020的一个例子.-Pwm control on an example, based on 8051f020 an example.

实现了有凌阳的外部中断进行技数，同时有2赫兹的内部定时器，以实现对外部频率的采集 -Sunplus has achieved the technology to a number of external interrupt, while Hertz has 2 internal timer in order to realize the acquisition of external frequency

本文件是单片机开发板STK500的使用说明，与大家共享-The present document is a single chip using the STK500 development board that share

KG.rar的全部，用KIL就可以打开，是一个开关控制程序，有LED显示接口和一个2*2健盘接口，开关时间的频率和周期可以调节。 -KG.rar of all, you can open with KIL is a switch control procedures, has LED display interface and a 2* 2 Kin-disk interface, switching frequency and cycle time can be adjusted.