Design and construction Data processing 6 Digital integrated circuits 6 Electronic apparatus and appliances 6 Integrated circuits 5 Electronic digital computers 4 Microprocessors 4 Logic circuits 3 Radio circuits 3 Radio frequency 3 Chemical reactors 2 Circuits 2 Computer-aided design 2 Digital electronics 2 Equipment and supplies 2 VHDL (Computer hardware description language) 2 Very large scale integration 2 Aerodynamics 1 Airplanes 1 Application specific integrated circuits 1 Automatic checkout equipment 1 Automobiles 1 Biomedical engineering 1 C (Computer program language) 1 Chemical engineering 1 Computer algorithms 1 Computer engineering 1 Computers 1 Dwellings 1 Electric filters, Active 1