时钟芯片DS1302的设置、读取和测试程序

功能完善的四层电梯程序。开门停8秒，上升或者下降一层用时5秒，有五秒倒计时数码管，楼层显示数码管，以及电梯内外楼层请求显示灯。-A well-functioning procedures for four-storey elevator. 8 seconds to open the door stopped, increased or decreased when a layer of 5 seconds, the 5 seconds countdown digital tube, digital tube display floor, as well as inside and outside the elevator floor indicator lights request.

本代码是本人毕设所做的GPRS数传系统的软件部分，实现了PPP，UDP，IP协议的分层和打包，实现了嵌入式设计中的UDP/IP协议栈-the code is completed, I set up the GPRS data-transmission system software, to achieve the PPP, UDP, IP protocol layering and packaged to achieve the design of embedded UDP/IP protocol stack

CRC16，C语言运算源码，包括四种算法，直接计算法，半查表法，全查表法，双8位表全查表法，适用于工业控制领域校验通讯数据使用，和MODBUS数据校验，在对不同的系统资源的要求环境下，采用不同的算法-CYXLIC REDUNDANCY, C language source computing, including four algorithms, direct calculation method, semi-look-up table method, the whole look-up table method, dual eight-wide table look-up table method, applied to the field of industrial control the use of calibration data communications and MODBUS calibration data in different systems of the requirements of environmental resources, mining different algorithms

可用于任何单片机平台的I2C总线读写程序，IO脚模拟。-Single-chip platform can be used for any of the I2C bus to read and write procedures, IO pin analog.

用单片机C语言编的日历芯片PCF8563的实时时间显示C程序源代码，可供单片机开发人员参考。-MCU series of the C language PCF8563 calendar chip real-time hours of C source code available to developers SCM reference.

监控PS2的按键信息，是否有键按下是否为要监控的值。是则激活，不是则继续。-PS2 monitor key information, whether there is any key press if the point is to monitor the value. Is then activated, not continued.

adc with atmega8 with proteus

hd7279的应用程序，实现了对八个二级管的控制。-hd7279 applications realize the eight diode control.

初始化键盘的源码，转自网友，给初学者参考-The source code to initialize the keyboard, carried Netizen, a reference to the beginner

基于ｆｐｇａ，采用ｑｕａｒｔｕｓ２的ＤＤＳ信号发生器，采用高速ＤＡＣ９０８为数模芯片，并可通过５１单片机送入调制信号进行ＦＭ调制-Based on the fpga, the use of the DDS signal generator quartus2 using DAC908 number of high-speed chip module, and passed into 51 single-chip FM modulation signal modulation