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Users can choose different access permissions. When access to the system adminis...
用户可选择不同权限进入系统。当以管理员权限进入系统时,可进行相应的成绩添加,查询,删除,修改,用户添加删除等功能,当以学生权限进入系统时,则只能进行成绩查询和密码修改等功能-Users can choose different access permissions. When access to the system administrator can add to the corresponding results, query, delete, modify, delete users and other functions, when the rights of students to enter the system, the results can only query and modify features such as password
- 2022-04-11 18:29:06下载
- 积分:1
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这是关于图像调制传递函数MTF计算好的影响。
这是关于图像调制传递函数MTF计算的一篇优秀文章,可以处理卫星图像,提高图像清晰度-This is on the image modulation transfer function MTF calculated an excellent article, you can deal with satellite imagery, improve image clarity
- 2023-06-11 07:30:04下载
- 积分:1
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design a process, a specific request, the company has four main categories : man...
设 计 一个c++的程序, 具 体 要 求
1、 公司主要有4类人员:经理、技术员、销售员、销售经理。
要求存储这些人的职工号、姓名、月工资、岗位、年龄、
性别等信息。
-design a process, a specific request, the company has four main categories : managers, technicians, sales, Sales Manager. These storage requirements of the workers, names, on wages, jobs, age, gender and other information.
- 2022-02-07 22:28:26下载
- 积分:1
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采样率小于一个连续时间信号最大频率的2倍时就叫undersampling,欠采样,根据抽样定理,当fs>=2fmax,也就是oversampling,过采...
采样率小于一个连续时间信号最大频率的2倍时就叫undersampling,欠采样,根据抽样定理,当fs>=2fmax,也就是oversampling,过采样时,数字信号才能重建成原来的模拟信号,欠采样重建会发生混叠-Sampling rate of a continuous-time signal is less than the maximum frequency of 2 times is called undersampling, bandpass sampling, according to sampling theorem, when fs
- 2022-02-01 00:43:12下载
- 积分:1
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Note:通过模拟量输入口LINE_IN输入电压值,以8K的采样率经A/D //转换后送给IOB口控制LED点亮,同时可以根据LED的点亮来了解转换 //的数据...
Note:通过模拟量输入口LINE_IN输入电压值,以8K的采样率经A/D //转换后送给IOB口控制LED点亮,同时可以根据LED的点亮来了解转换 //的数据-Note : Analog inputs LINE_IN input voltage value to 8K by the sampling rate A/D// conversion gave Privalov population control LED lights, LED can be lit to understand the conversion// data
- 2023-03-08 11:15:03下载
- 积分:1
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Fortran常用算法程序集
Fortran常用算法程序集-徐士良间:第一章所有的源程序,欢迎寻找此书源程序的朋友下载使用 -Fortran common assembly algorithm-徐士良between: the first chapter of the source of all, welcome to the book to find friends to download the source code to use
- 2022-02-09 14:51:23下载
- 积分:1
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基于远程外差简单的60-GHz的MB-OFDM超宽带ROF系统
这是一个PDF文件,以了解研究无线电过光纤系统的参考。一个简单的60-GHz的无线电过光纤系统用人不相关的光外差和包络的组合检测提出并实验证明。在中心局,多频带正交频分复超宽带(MB-OFDM UWB)信号被用于双臂马赫 - 曾德尔调制器的外部调制产生的光信号,边带信号,然后将其偶联与未调制的自由运行的连续波激光器。光纤外差混频在基站和包络检测在客户机被利用。实验结果证实该光子的毫米波信号的产生和检测可以在无需进行复杂的光学锁相环来实现回路和高频微波源。作为一个证明概念,成功传输的3.84 Gb / s的16-QAM的MB-OFDM UWB信号超过48公里标准单模光纤无色散补偿和另外4米无线信道被实验证实
- 2022-03-14 04:19:19下载
- 积分:1
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脉冲编码调制实验过程(PCM)本文详细介绍了PCM编码的实验过程...
脉冲编码调制实验过程(PCM)本文详细介绍了PCM编码的实验过程-Pulse code modulation experiment (PCM) This paper introduces in detail the experimental process of PCM coding
- 2023-05-30 13:05:03下载
- 积分:1
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下面的函数LoadBmpFile,其功能是从一个.bmp文件中读取数据(包括BITMAPINFOHEADER,调色板和实际图象数据),将其存储在一个全局内存句柄...
下面的函数LoadBmpFile,其功能是从一个.bmp文件中读取数据(包括BITMAPINFOHEADER,调色板和实际图象数据),将其存储在一个全局内存句柄hImgData中,这个hImgData将在以后的图象处理程序中用到。同时填写一个类型为HBITMAP的全局变量hBitmap和一个类型为HPALETTE的全局变量hPalette。这两个变量将在处理WM_PAINT消息时用到,用来显示位图。该函数的两个参数分别是用来显示位图的窗口句柄,和.bmp文件名(全路径)。当函数成功时,返回TRUE,否则返回FALSE。-The following function LoadBmpFile, its function is from a. Bmp file to read data (including the BITMAPINFOHEADER, palette and the actual image data), its stored in a global memory handle hImgData, this hImgData will in the future plans used as treatment procedures. At the same time, fill out a type of global variable HBITMAP HBITMAP HPALETTE and a type of global variable hPalette. These two variables will be used for treatment WM_PAINT message, used to display bitmaps. The function of two parameters are used to display the bitmap handle of the window, and. Bmp file name (full path). When the function is successful, return TRUE, otherwise return FALSE.
- 2023-07-21 04:35:03下载
- 积分:1
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简易无线电遥控系统利用高频载频信号将调制信号经由发射端天线送出,在接收端经接收天线接收,再经过解调和解码恢复原信号用来控制发光二极管的亮灭。...
简易无线电遥控系统利用高频载频信号将调制信号经由发射端天线送出,在接收端经接收天线接收,再经过解调和解码恢复原信号用来控制发光二极管的亮灭。-Simple radio-controlled system uses high-frequency modulated carrier frequency signal to the antenna signal sent by the transmitter, the receiver antenna by the receiver, after demodulation and decoding to restore the original signal used to control the light to eliminate light-emitting diodes.
- 2022-12-20 21:05:04下载
- 积分:1