Logic circuits 36 Computer-aided design 32 Digital electronics 15 Verilog (Computer hardware description language) 15 Digital integrated circuits 9 Design and construction 7 Computer-Aided Design 6 Data processing 6 Logic design 6 Application-specific integrated circuits 5 Low voltage integrated circuits 5 Very high speed integrated circuits 5 Microcomputers 4 Pattern perception 3 Logic circuits Computer-aided design 2 Sequential machine theory 2 Computer aided design 1