QA75-76.95 Computer Science
TK Electrical engineering. Electronics. Nuclear engineering
TK 301-399 Electric meters
TK 452-454.4 Electric circuits and networks
TK 1001 1841 Production of electricity by direct energy transmission
TK 2000-2891 Dynamoelectric machinery, including generators, motors, transformers
TK 2896-2985 Production of electric power
TK 3001-3521 Distribution or transmission of electric power
TK 4001-4102 Applications of electric power
TK 4125-4399 Electric lighting
TK 4601-4661 Electric heating
TK 5101-6720 Telecommunication Internet
TK 5105.8 World wide web
TK 7800-8360 Electronics
TK 7885-7895 Computer engineering, computer hardware
TK 8300-8360 Photoelectronic devices
TK 9001-9401 Nuclear engineering, atomic power
TK 9900-9971 Electricity for amateurs, construction manuals