Programmable array logic 46 Field programmable gate arrays 33 VHDL (Computer hardware description language) 21 Logic design 15 Design and construction 10 Programmable logic devices 10 Computer-aided design 9 Digital electronics 7 Rapid prototyping 7 Gate array circuits 5 Adaptive computing systems 2 Circuits 2 Electronic digital computers 2 Automobiles 1 Design 1 Electronic circuit design 1 Electronic equipment 1 Logic circuits 1 Programmable logic devices - - Design and construction 1 Programming logic devices 1