这是一个友善之臂micro2440板的核心板原理图，更新时间…

单片机AT90S系列 制作简易USB接口（软件模拟,无usb硬件）。doc- Monolithic integrated circuit AT90S series manufacture simple USB connection (software simulation, non- usb hardware). Doc

很好用的AVR单片机下载工具,内有电路图,源码-AVR single-chip microcomputer used in a very good download tool, which has schematics, source code

Master and Slave Example Protocol Design for mcs-51 keil c51

MAX7219驱动例程，工程内还有DS1302等驱动代码，是学习写驱动不错的工程。-MAX7219-driven routines, engineering, etc. There are DS1302 driver code, is to learn to write good works driver.

本系统参照片上系统的设计架构、采用FPGA与SPCE061A相结合的方法，以SPCE061A单片机为进程控制和任务调度核心；FPGA做为外围扩展，内部自建系统总线，地址译码采用全译码方式。FPGA内部建有DDS控制器，单片机通过系统总线向规定的存储单元中送入正弦表；然后DDS控制器以设定的频率，自动循环扫描，生成高精度，高稳定的5Hz基准测量信号。-The system with reference to the design of system-on-chip architecture, used a combination of FPGA and SPCE061A approach to SPCE061A Singlechip for process control and scheduling core mission FPGA for external expansion, internal self-system bus, address decoding using the entire translated code approach. DDS has built internal FPGA controller, microcontroller through the system bus to the provisions of the storage unit into the sine table DDS controller and then to set the frequency, automatic cycle of scanning, to generate high precision and high stability of the baseline measurement 5Hz signal.

c51的温度测量程序,利用的是模拟输入初学哦，写得不好。-Get Temperature with C51

The 8051 programming in C.

利用c8051f020单片机对片内flash进行编程，可利用rom存取数据-by Using C8051f020 right microcontroller chip flash program can be used to access the data rom

在Keil环境下，用1302实现的时钟，用6位数码管显示时间,显示格式00:00:-In the Keil environment, to achieve by 1302 the clock, with six digital display time, display format 00:00:00

PIC上实现的I2C通讯源程序，使用IO口模拟I2C总线时序来实现的。-PIC achieve I2C communications source, I use IO I2C bus timing simulation to achieve.