c语言成绩管理系统

AT89C51的IO方式控制3个8255的实用程序，AT89C51的IO方式控制3个8255的实用程序。(AT89C51 of IO way of controlling 3 8255 utilities, AT89C51 of IO way of controlling 3 8255 utilities.)

图像控件，在单文档中加了一个菜单显示对话框，对话框可以打开图像(In a single document added a menu displays a dialog box, you can open the image)

DSC8257实验例程，带你一步一步深入了解DSC8257

此文件适用于热爱编程的初学者，能够带你轻松的学会C++语言。

J1939是SAE（美国汽车协会）定义的基于CAN总线的规范，目的是解决不同发动机厂商、不同ECU厂商的兼容性问题。一般运用于大型车辆。(J1939 is a specification based on CAN bus defined by SAE (American Automobile Association), aiming at solving the compatibility problem of different engine manufacturers and different ECU manufacturers. Generally used in large vehicles.)

测温报警，通过串口线接收STM32发送来的温度数据，并对温度进行监测。(GET TEMP)

详细的哈夫曼编码、解码源程序，带有注释，分模块化-detailed Huffman encoding, decoding source, with Notes, modular-

基于蒙特卡洛方法的主动声纳信号检测性能分析.主动声纳信号检测性能的分析上,目前在计算机仿真中一般假定混响包络的统计特性符合瑞利分布模型。基于此模型,已经有了较完善的理论。然而,在现代高分辨声纳系统中,混响包络的统计特性并不符合瑞利分布模型。此时在接收机工作特性分析时存在大量繁琐的公式推导。因此该文采用蒙特卡洛(M onte Carlo)统计试验方法,实现对瑞利分布混响背景下的主动声纳信号检测性能分析。结合对接收机工作特性曲线的仿真,得出了检测概率的理论值和仿真结果的误差曲线。误差曲线表明,蒙特卡洛方法在主动声纳信号检测的性能评估中是可行的。 更多还原 (Active sonar signal detection performance analysis, computer simulation is generally assumed that the statistical properties of the reverberation envelope distribution model of Rayleigh active sonar signal detection performance analysis based on the Monte Carlo method. Based on this model, has been a better theory. However, in the modern high-resolution sonar system, the statistical characteristics of the reverberation envelope does not comply with the Rayleigh distribution model. At this point in the receiver operating characteristic analysis, there is a lot of tedious formula derivation. In this paper, using the Monte Carlo (M onte Carlo) statistical test methods, active sonar signal detection performance analysis reverberation background Rayleigh distribution. The receiver operating characteristic curve simulation obtained the error curve of the theoretical value and the simulation results of the detection probability. The error curve shows that the Monte Carlo method in the assessm)

说明：  qt编写上位机获取51单片机采集到的温湿度数据实时显示。(The temperature and humidity data collected by 51 single chip microcomputer can be displayed in real time.)

该小程序形象说明了Windows窗口与视口之间的映射关系。(The image shows a small Windows program window and viewport mapping between.)