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ds18b20温度采集及数码管显示,采用串口通信方式-ds18b20 acquisition and digital temperature display, using serial communication
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汇编,C 源码
用STC89C58单片机做的数据采集和控制,12位AD转换使用TLC2543,通讯协议采用MODBUS(RTU),通过拨码开关改变从机地址,支持模拟量或数字量的读写。(4路模拟量输入、6路开关量输出(继电器输出)、8路开关量输入)开发环境:KEIK 7.06 (2006-7-5,C-C++,61KB,17次)
-Microcontroller to do with STC89C58 data acquisition and control, use 12-bit AD
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数字通信系统中采用基带传输和频带传输[ 1, 2 ] ,在抽样判决器之前,信号叠加了信道噪声. 本文利用
Matlab软件仿真[ 3, 4 ]分析了在判决器前叠加了高斯噪声后,信噪比与系统的误码率之间的关系.-Digital communication system using baseband transmission and band transmission [1, 2], in a sample before the decision device, the signal super
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基于CPLD_FPGA的数字通信系统建模与设计,本学习资料共分为4个部分,此为第一部分,供对数字通信系统建模和设计有兴趣的朋友学习参考。-CPLD_FPGA based on the digital communication system modeling and design, the learning materials is divided into four parts, this is the first part of the digital communication syste
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基于CPLD_FPGA的数字通信系统建模与设计,本学习资料共分为4个部分,此为第一部分,供对数字通信系统建模和设计有兴趣的朋友学习参考。-CPLD_FPGA based on the digital communication system modeling and design, the learning materials is divided into four parts, this is the first part of the digital communication syste
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基于CPLD_FPGA的数字通信系统建模与设计,本学习资料共分为4个部分,此为第四部分,供对数字通信系统建模和设计有兴趣的朋友学习参考。-CPLD_FPGA based on the digital communication system modeling and design, the learning materials is divided into four parts, this is the fourth part of the digital communication syst
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数字通信系统4进制振幅键控4ASK信号的调制的VHDL代码-Digital Communication Systems 4 binary amplitude shift keying modulation 4ASK signal VHDL code
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数字通信系统4进制频移键控4ASK信号的调制的VHDL代码-Digital Communication Systems 4 MFSK 4ASK signal modulation VHDL code
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完成M=4正交信号的数字通信系统的蒙特卡罗仿真-The completion of M = 4 orthogonal signals in Monte-Carlo simulation of digital communication systems
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M=4的双正交信号数字通信系统仿真实例,包括主程序和子程序全部内容,可以直接运行。-M = 4 of the pairs of orthogonal signal digital communication system simulation examples, including the main program and subroutines all, you can run directly.
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完成M=4的正交信号的数字通信系统的蒙特卡罗仿真。分析其在加性高斯白噪声下误码率与信噪比之间的关系,绘出误码率-信噪比曲线图,并和物理曲线进行比较。-The completion of M = 4 orthogonal signals in Monte Carlo simulation of digital communication systems. Analysis of the additive white Gaussian noise bit error rate and signal
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该程序完成一个16电平PAM数字通信系统的仿真,并测量了它的误码率。首先产生信息符号序列,该序列被当做4个信息比特一组,将16组符号映射到16个信息幅度。检测器计算距离,输出与真正传输的信息符号序列作比较,然后将差错计数。- This procedure completes a 16 level PAM digital communication system s simulation, and has surveyed its error rate. First has the message
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digital envelope program which is used to have a secure communication over the network.uses caesar cipher for public and RSA for private encryption
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《Visual Basic串口通信与测控应用技术实战详解》 随书光盘 第10章 10.4 利用DAQDO控件实现板卡数字量输出-" Visual Basic serial communication with the monitoring and control application technology Detailed real" CD with the book Chapter 10 10.4 DAQDO control achieved using digital o
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Given k = 4 n = 7 and
G= 1 1 0 1 0 0 0
0 1 1 0 1 0 0
1 1 1 0 0 1 0
1 0 1 0 0 0 1
i. produce 16 possible message blocks
ii. produce all the pertaining codeword vectors-Given k = 4 n = 7 and
G= 1 1 0 1 0 0 0
0
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这是做过的一个两台51单片机之间串口通信的实例,下位机控制4*4键盘的按键扫描,在上位机上通过数码管显示键值。采用模块化编程,结构清晰明了。在文件内A程序为上位机程序,B程序为下位机程序。-This is done one of two serial communication between the 51 SCM instance, the next crew to control the scan of 4* 4 keyboard keys on the host computer thro
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用STC89C58单片机做的数据采集和控制,12位AD转换使用TLC2543,通讯协议采用MODBUS(RTU),通过拨码开关改变从机地址,支持模拟量或数字量的读写。(4路模拟量输入、6路开关量输出(继电器输出)、8路开关量输入).-To do STC89C58 SCM data acquisition and control, 12 AD converter TLC2543, communication protocol MODBUS (RTU), to change the slave ad
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数字通讯半期期末原理试题及答案详解 4套 -4 sets of digital communication half of the end of principle questions and answers
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由于目前数字通信中一般都使用二进制符号,因此二进制的Huffman编码技术最为普遍,其编码步骤如下:
1、将信源符号按概率从大到小进行排列;
2、给两个概率最小的信源符号各分配一个码元“0”和“1”,然后将这两个信源符号合并成一个新符号,并用这两个最小的概率之和作为新符号的概率,结果得到一个只有(n-1)个信源符号的新信源(假设原来所需编码的符号数为n),称为信源的第一次缩减信源S1;
3、将缩减信源S1的符号仍按概率从大到小的顺序进行排列,重复步骤2,得到只含(n-2)个符号的缩减
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本程序为S7-200PLC程序,用于项目数据采集,可以一次性采集最多10块电子电表,10块数显表,4块变送器的数据。-For S7-200 PLC program, the program for data collection, can be a one-time acquisition at most 10 pieces of electronic meters, 10 digital display table, 4 pieces of data transmitter
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