Data transmission systems 59 Computer networks 34 Communication--Creation and transmission of records 22 Transmission 21 Heat 9 Disease transmission 8 Transmission of texts 7 Neural transmission 6 Computer network architectures 5 Fiber optics 5 Local area networks (Computer networks) 5 Computers 4 Engineering 4 Optical communications 4 Telecommunication 4 Wireless communication systems 4 Circuit analysis 3 Coding theory 3 Computer science 3 Epidemiology 3 History 3 Mass transfer 3 Mathematical models 3 Mechanical engineering 3 Plant viruses 3 Transmission genetics 3 transmission 3 Animal diseases 2 Applied physics 2 Books 2