MDS 621.38833

Wording: Applied science & technology Engineering Applied physics Electronics & Computers Electronics, communications engineering Television Not set Not set

Dewmoji: 💡🔩🏭?????

0 Computer science, information & general works 252,013 ℹ️	1 Philosophy & psychology 270,129 🧠	2 Religion 681,242 🙏	3 Society, government, & culture 1,328,382 👫	4 Language 209,883 💬	5 Natural sciences & mathematics 431,918 🔬	6 Applied science & technology 940,635 💡	7 Arts & recreation 1,031,850 🎨	8 Literature & rhetoric 1,436,736 📚	9 History & geography 837,760 🗺️
60 Technology 9,943 💡	61 Medicine & health 306,082 💉	62 Engineering 157,979 🔩	63 Agriculture 88,093 🌱	64 Home economics & family management 172,237 🏠	65 Management & public relations 145,064 👔	66 Chemical engineering 19,470 🚀	67 Manufacturing 8,724 📦	68 Manufacture for specific uses 20,805 🔨	69 Buildings 12,238 👷
620 Mechanical & Civil Engineering 21,480 🔩	621 Applied physics 47,082 🏭	622 Mining and related operations 3,895 🕳	623 Military Vehicles: Land, Air, & Sea 15,890 ⚓	624 Bridges & Tunnels 8,105 🌉	625 Railroads, Subways, Roads 6,655 🛤	626 [Formerly: Canal Engineering] 83	627 Dams, Lighthouses, Drilling Platforms 1,873 🌊	628 Water Treatment & Waste Disposal 7,319 🚽	629 Transportation Vehicles 45,597 🌿
621.0 1,207	621.1 Steam engineering 687	621.2 Hydraulic machinery 291	621.3 Electronics & Computers 33,501	621.4 Engines, Power Plants, Tools 4,105	621.5 Pneumatic machinery and Compressed air and Refrigeration and refrigerating machinery 454	621.6 Fans (Machinery) and Pumping machinery 161	621.7 Production engineering and Factories and Machine-shop practice 182	621.8 Machine Engineering 2,644	621.9 Machine-tools 1,518
621.30 Electric power plant 436	621.31 Generation, modification, storage, transmission of electric power 5,025	621.32 Lighting 393	621.33 Electric Railways 50	621.34 Magnets and Electromagnets 121	621.35 Batteries and Superconductivity 40	621.36 Optical engineering 2,905	621.37 Electrical Measurement Instruments 156	621.38 Electronics, communications engineering 20,091	621.39 Computer engineering 2,322
621.380 Light current engineering 149	621.381 Electronics 8,998	621.382 Communications 4,017	621.383 Telegrapy 40	621.384 Radar, Radio 3,694	621.385 Telephony 334	621.386 Telephone terminal equipment 51	621.387 Telephone transmission equipment 28	621.388 Television 756	621.389 Audio, sound engineering 1,031
621.3880 53	621.3881 3	621.3882	621.3883 75	621.3884	621.3885 15	621.3886 4	621.3887 1	621.3888 35	621.3889 1
621.38830 1	621.38831 2	621.38832 2	621.38833 44	621.38834 2	621.38835 2	621.38836 8	621.38837	621.38838	621.38839
621.388330	621.388331	621.388332 15	621.388333	621.388334	621.388335	621.388336	621.388337 3	621.388338	621.388339