RS232转RS485电路原理图，值得一看.

单片机控制数码管显示，实现计数器功能，使能按下一个按钮之后计数器开始累加。-Single-chip digital control display, the achievement of functional counters so that they can press a button to start after the cumulative counter.

USB接口芯片CH375HM-USB interface chip CH375HM

读写AT24C01演示程序 (在指定地址a处写入数据 填充数据到EEPROM内等)-literacy AT24C01 Demonstration Program (designated address data into a Department of filling data EEPROM etc.)

24CXX全系列EEPROM底层读写函数，自己写的，IIC接口函数自己根据具体方法可以模拟或硬件实现-qi bottom of the whole series EEPROM read and write functions, wrote, IIC interface function in accordance with their own specific methods can be simulated or hardware

应用背景3280led点阵时钟，08接口，支持市面上大部分08接口的双色点阵，3264可以相应修改关键技术3280 led 点阵时钟，08接口。淘宝有很多相似的点阵版，基本都能用。。。

一个ps2口驱动和编程方法。主要是键盘,当键盘产生中断时，蜂鸣器和运行灯都会有反映。可以敲入一些键值，同时观察主板反映。--PS2 port driver and programming method. When keyboard generates an interruption, alarm and light will have response. You could press some keys and observe the reaction of motherboard.

用单片机控制键盘的程序,利用中断获得键盘扫描码并转换为ASCII码，在1602液晶上显示字符。C语言编写，KEIL环境下编译，键盘驱动写得相当好。-Single-chip microcomputer to control the keyboard with the procedure, the use of interrupted access to the keyboard scan code and converted to ASCII code, in the 1602 character LCD display. C language, KEIL compiler environment, keyboard-driven written a very good job.

指南描述了一组用于SPI协议软件实现的低级程序，在主模式中所有的通信都来自AVR-guide describes a group SPI protocol software for the realization of the low-level procedures, the main mode of communication are all from the AVR

整流实验，在线整流，要求Uda>0。。。 -Rectifier experimental, on-line rectifier request Uda> 0. . .

与stk相关的avr bootloader程序,采用avr-gcc编写.-associated with STK avr Bootloader procedures used avr- gcc prepared.