USB_2.0.pdf

基于avr单片机，1302芯片实现时钟，单字节读写(avr atmega16 ds1302)

电子时钟程序，通过VC++编程，实现电子时钟程序，方便编程爱好者交流学习。(Electronic clock procedures, through VC++ programming, electronic clock procedures to facilitate the exchange of learning programming enthusiasts.)

超声波模块的使用，包括和单片机通信 可以实现超声波测距(The use of ultrasonic modules, including communication can be achieved and the microcontroller Ultrasonic Ranging)

OS_II移植到单片机,网上都是大模式移植,这是我在网站上找到的小模式移植,不知道有用吗?(OS_II transplanted into single-chip, on-line model of graft are large, this is my website found in the small model of transplantation, I do not know useful?)

一个简单的定时器定时0.5s和1s程序，指在教导新手如何使用定时器(A simple timer timer 0.5s and 1s procedures, means to teach novices how to use the timer)

说明：  本课题对基于单片机的交通灯控制系统进行设计。以MCS-51系列单片机为控制核心，设计并制作交通灯控制系统，用于十字路口的车辆及行人的交通管理。东西南北四个路口具有左拐、右拐、直行及行人4种通行指示灯，并分别用计时器显示路口通行转换剩余时间，在特种车辆如119、120通过路口时，系统可自动转为特种车辆放行，其他车辆禁止通行状态。(Traffic light control system based on SCM (Single Chip Microcomputer) is designed in this paper. System requires that MCS-51 series SCM is used as CPU. Traffic light control system should be designed and made .There are four groups light which indicate to turn left, turn right, and go straight ahead and pedestrian access in east, west, north and south four directions. Timer shows traffic conversion remainder time. When special vehicles, such as 119,120 go through, the system can automatically allow special vehicles running and other vehicles is prohibited.)

这是一款模拟modbus从机的程序，可以方便用户调试modbus程序，本程序完全免费。(This is a simulation of the modbus from machines, can facilitate users to debug the modbus program, this program is completely free. )

一种简单的心率测量系统设计，能显示并进行上下限报警(A simple heart rate measurement system design, and upper and lower alarm)

单片机联网的UIP协议程序，以及必要的驱动程序。(Networked microcontroller UIP agreement procedure, and the necessary drivers.)

一个以太网帧解析程序，实现以下功能：解析已封装好的Ethernet V2.0帧封装文件（见附件），判断有多少个帧，每个帧的所有字段内容，检测CRC校验是否正确(An Ethernet frame analysis program, the following functions: parsing the encapsulated Ethernet V2.0 frame encapsulation (see annex), to determine the number of frames, each frame contents all fields to detect CRC checksum is correct)