Computer-aided design 27 Field programmable gate arrays 27 Rapid prototyping 17 VHDL (Computer hardware description language) 12 Verilog (Computer hardware description language) 8 Programmable array logic 7 Logic design 5 Integrated circuits 2 Low voltage integrated circuits 2 Nanoelectromechanical systems 2 Very large scale integration 2 Autonomous underwater vehicles 1 Computer architecture 1