MDS621.384187

Wording: Technology and Application of KnowledgeEngineering and allied operationsApplied physicsElectrical, magnetic, optical, communications, computer engineering; electronics, lightingElectronics, communications engineeringRadar, RadioAmateur radioNot setNot set

Dewmoji: πŸ’‘πŸ”©πŸ­??????

0
Information
208,584
ℹ️
1
Philosophy and Psychology
217,947
πŸ’­
2
Religions
546,769
πŸ™
3
Social sciences
1,133,842
πŸ‘«
4
Language
165,887
πŸ’¬
5
Natural sciences and mathematics
364,055
πŸ”¬
6
Technology and Application of Knowledge
812,112
πŸ’‘
7
The arts
820,777
🎨
8
Literature
1,159,750
πŸ“š
9
History and Geography
679,534
πŸ—ΊοΈ
60
General Technology
7,705
πŸ’‘
61
Medicine and health
267,282
πŸ’‰
62
Engineering and allied operations
135,591
πŸ”©
63
Agriculture & related technologies
75,965
🌱
64
Home and family management
147,559
🏠
65
Management and auxiliary services
127,319
πŸ‘”
66
Chemical Technology
16,741
πŸš€
67
Manufacturing
6,974
πŸ“¦
68
Manufacture of products for specific uses
17,079
πŸ”¨
69
Building
9,897
πŸ‘·
620
Engineering
18,905
πŸ”©
621
Applied physics
41,260
🏭
622
Mining Engineering and Mines and Mineral Resources
3,232
πŸ•³
623
Military Engineering and Marine Engineering
13,476
βš“
624
Civil Engineering
7,162
πŸŒ‰
625
Road and Railroad
4,920
πŸ›€
626
unassigned since 1911 7th Edition (was Canal Engineering)
51
🀷
627
Hydraulic Engineering
1,622
🌊
628
Sanitary; Municipal
6,323
🚽
629
Other Branches
38,640
🌿
621.0
1,098
621.1
Steam engineering
559
621.2
Hydraulic machinery
237
621.3
Electrical, magnetic, optical, communications, computer engineering; electronics, lighting
29,518
621.4
Heat engineering
3,560
621.5
Pneumatic machinery and Compressed air and Refrigeration and refrigerating machinery
403
621.6
Fans (Machinery) and Pumping machinery
139
621.7
Production engineering and Factories and Machine-shop practice
114
621.8
Machine Engineering
2,325
621.9
Machine-tools
1,245
621.30
411
621.31
Generation, modification, storage, transmission of electric power
4,326
621.32
Lighting
344
621.33
Electric Railways
38
621.34
Magnets and Electromagnets
103
621.35
Batteries and Superconductivity
28
621.36
Optical engineering
2,597
621.37
Electrical Measurement Instruments
120
621.38
Electronics, communications engineering
17,843
621.39
Computer engineering
2,129
621.380
Light current engineering
215
621.381
Electronics
7,957
621.382
Communications
3,658
621.383
Telegrapy
34
621.384
Radar, Radio
3,218
621.385
Telephony
305
621.386
Telephone terminal equipment
46
621.387
Telephone transmission equipment
22
621.388
Television
685
621.389
Audio, sound engineering
900
621.3840
88
621.3841
Amateur radio
1,210
621.3842
18
621.3843
4
621.3844
1
621.3845
681
621.3846
5
621.3847
621.3848
Radar
333
621.3849
621.38410
5
621.38411
58
621.38412
56
621.38413
182
621.38414
621.38415
57
621.38416
219
621.38417
8
621.38418
67
621.38419
104
621.384180
5
621.384181
621.384182
621.384183
621.384184
621.384185
621.384186
621.384187
6
621.384188
621.384189

Related Tags

"Far Friends"

MDS classes with significant recommendations overlap, excluding ones under the same top-level class.

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Wording

1922 Edition
Do NOT copy from the copyrighted sources. 1922 edition here, in absurd phonetic English. Use standard spelling.
Modern Language
Modern wording should be based on the Free Decimal System or on the 1922 edition of Dewey. Language and concepts may be modernized. Do not use an in-copyright source.
Emoji
A single emoji for this DDC Class. The full emoji will be composed of the emojis from the top level to this one.