VHDL (Computer hardware description language) 307 Verilog (Computer hardware description language) 172 Design and construction 167 Data processing 153 Computer-aided design 101 Digital electronics 97 Computer hardware 79 Logic design 66 Electronic digital computers 62 Logic circuits 59 Computer hardware description languages 53 Field programmable gate arrays 51 Integrated circuits 50 Computer science 36 Digital integrated circuits 33 Computer simulation 32 System design 31 Embedded computer systems 27 Engineering 25 Very large scale integration 24 Programmable logic devices 22 Systems engineering 22 Verification 22 Electronic circuit design 21 Programmable array logic 21 Computer engineering 17 Sequential machine theory 15 Circuits 14 Computer network architectures 14 Electronics 14