信息论：MFC实现Morse码重组优化减少冗余度
上传时间： 2016-01-23
上传用户：xuanchangri
RECOMMENDATION ITU-R M.1677 International Morse cod
标签： RECOMMENDATION International ITU-R Morse
上传时间： 2016-10-21
上传用户：invtnewer
Lakey这是一个免费的CW练习/收/发软件，供大家共同学习研究，有需要源码的朋友可以给我发邮件或加为MSN索取。在未来，我会不断更新其功能和修正错误。之前计划2006年底前拿出的正式版本，由于个人工作和精力等原因，不得已推迟。今天发布的版本，增加了对Koch练习法的支持。但仍然是一个BETA版。 本软件的目标是设计成一个使用简便，能够尽量利用一般PC本身具有的硬件功能和性能（主要指CPU的运算和声卡的音频捕捉/播放能力），实现不用另接特殊外围接口电路，不用改/加装电键等，即可让PC具有摩尔斯电码（Morse Code）的收发能力软件。未来可逐渐通过对PC硬件性能的挖掘，实现对音频信号进行分析、过滤、处理。 这是第一个非正式发行版本，因此很多功能与设计目标还有很大差距。希望大家多提意见！
上传时间： 2014-09-02
上传用户：dsgkjgkjg
按Pearson Prentice Hall，c++中相应要求完成的PIGLATIN,Morse码加密，完数问题，数字反向，快速排序等问题，VC 6.0 下编译测试通过（单个源文件直接编译连接即可运行）
上传时间： 2016-07-30
上传用户：l254587896
Soon after Samuel Morse’s telegraphing device led to a deployed electri- cal telecommunications system in 1843, waiting lines began to form by those wanting to use the system. At this writing queueing is still a significant factor in designing and operating communications services, whether they are provided over the Internet or by other means, such as circuit switched networks.
标签： Telecommunication Queueing Packet Theory with
上传时间： 2020-05-31
上传用户：shancjb
The unguided transmission of information using electromagnetic waves at radio frequency (RF) is often referred to as wireless communications, the first demonstration of which took place at the end of the 19th cen- tury and is attributed to Hertz. The technology was, shortly thereafter, commercialised by, amongst others, Marconi in one of the first wire- less communication systems, i.e., wireless telegraphy. In the first half of the 20th century the technology was developed further to enable more than the mere transmission of Morse code. This first resulted in uni- directional radio broadcasting and several years later also in television broadcasting.
标签： Imperfections RF
上传时间： 2020-06-01
上传用户：shancjb
Telecommunications is today widely understood to mean the electrical means of communicating over a distance. The first form of telecommunications was that of the Telegraph, which was invented quite independently in 1837 by two scientists, Wheatstone and Morse. Telegraphy was on a point-to-point unidirectional basis and relied on trained operators to interpret between the spoken or written word and the special signals sent over the telegraph wire. However, the use of telegraphy did greatly enhance the operations of railways and, of course, the dissemination of news and personal messages between towns.
标签： Telecommunications Understanding Networks
上传时间： 2020-06-01
上传用户：shancjb
