Data processing 82 Logic design 80 VHDL (Computer hardware description language) 38 Design and construction 30 Computer-aided design 28 Logic circuits 26 Integrated circuits 13 Verilog (Computer hardware description language) 11 Design 10 Digital electronics 10 Sequential machine theory 10 Application specific integrated circuits 9 Microprocessors 9 Very large scale integration 9 Circuits 4 Digital integrated circuits 4 Electronic digital computers 4 Microcomputers 4 Compilers (Computer programs) 3 Programmable logic devices 3 Integrated circuit layout 2 Switching theory 2 logic design 2 sequential machine theory 2 Computer architecture 1 Computer logic 1 Computer organization 1 Computer-Aided Design 1