凌阳单片机硬件说明书，详细介绍了凌阳单片机的硬件结构。

Getting Started with eCos-mips 文档-Getting Started with eCos- mips Documents

使用89S52设计的电子钟，C51 编写，本例没有使用1302等时钟芯片，但本例完全具有时钟芯片的功能。比如基本的年月日，时分秒和星期功能，而且还有平闰年的天数自动补偿。由于采用的是全软件算法，时钟误差较大，采用高质量晶振可以减少误差。本例重在培养与训练初学者对C51的学习。-89S52 designed using an electronic clock, C51 preparation, in this case did not use 1302 clock chip, etc., but in this case complete with a clock chip functions. For example the basic date, time, and every second week of features, but also the number of days flat leap automatic compensation. As a result of the full software algorithms, the clock error of greater use of high-quality crystal can reduce the error. In this case focuses on training and training for beginners to learn on the C51.

AVR STK500 compatible bootloader

I2C总线驱动程序(用两个普通IO模拟I2C总线)-I2C Bus Driver (using two ordinary analog IO I2C Bus)

ARM7下用图形用户界面实现LED,KEY,MOTOR,AD功能-ARM7 using a graphical user interface LED, KEY, MOTOR, AD function

难得的SD卡SD模式四线制读写源代码，没有文件系统，简单的暴力读写，可以作为开发参考。

usb 的固件编程序源码-usb firmware programmed FOSS

2 i o 5 键 盘 模 拟 音 量 数 码 管 显 示 -2 io 5 keyboard, analog volume digital tube display

MSP430与CC1100通过SPI接口通信，四个按键，当按下某一个按键时，相应的指示灯变亮---------短距离无线通信-MSP430 and CC1100 communications through the SPI interface, four button, when pressed a button, the corresponding indicator variable light- short-distance wireless communication

采用等精度测频原理的频率计 要求： 设计一个用等精度测频原理的频率计。 频率测量测量范围1~9999； 其精度为 ； 用4位带小数点数码管显示其频率； 并且具有超量程、欠量程提示功能。-With equal precision frequency measurement principle of the frequency of meter requirements: design of a frequency measurement with the principle of equal precision frequency counter. Frequency Measurement Measuring Range 1 ~ 9999 its accuracy with four with a decimal point LED display its frequency and has a super-range, less range prompts.