QA75 Electronic computers. Computer science 54 TK Electrical engineering. Electronics Nuclear engineering 51 TJ Mechanical engineering and machinery 15 QA76 Computer software 12 TA Engineering (General). Civil engineering (General) 12 TP Chemical technology 7 QA Mathematics 6 HD28 Management. Industrial Management 4 Neural networks (Computer science) 4 FPGA 3 Q Science (General) 3 QC Physics 3 TL Motor vehicles. Aeronautics. Astronautics 3 Artificial intelligence 2 Automation 2 Cloud Computing 2 Cloud computing 2 Computer software 2 Cybersecurity 2 Data mining 2 Development. UML (Computer science) 2 Digital forensics 2 L Education (General) 2 Learning. Learning strategies 2 Machine learning 2 NA Architecture 2 Programming. Rule-based programming. Backtrack programming 2 QA1-939 Mathematics 2 T Technology (General) 2 TS Manufactures 2