Design and construction 30 Electronic digital computers 30 Data processing 5 Congresses 4 Digital electronics 3 Logic circuits 3 System design 3 Computer architecture 2 Computer engineering 2 Computer programming 2 Computer software 2 Development 2 Electronic circuit design 2 Logic design 2 Amateurs' manuals 1 Application specific integrated circuits 1 Automatic test equipment 1 Binary system (Mathematics) 1 Compilers (Computer programs) 1 Computer hardware description languages 1 Computer industry 1 Computer networks 1 Computer-aided design 1 Electromagnetic compatibility 1 Equipment and supplies 1 Error-correcting codes (Information theory) 1 Fault-tolerant computing 1 History 1 Human engineering 1 Industrial organization 1