MDS621.381522

Wording: TechnologyEngineering and allied operationsApplied physicsElectrical, magnetic, optical, communications, computer engineering; electronics, lightingElectronics, communications engineeringElectronicsNot setNot setNot set

Dewmoji: 💡🔩🏭??????

0
Information
216,948
ℹ️
1
Philosophy and Psychology
229,419
💭
2
Religions
562,779
🙏
3
Social sciences
1,169,921
👫
4
Language
177,109
💬
5
Natural sciences and mathematics
380,441
🔬
6
Technology
844,132
💡
7
The arts
857,504
🎨
8
Literature
1,201,263
📚
9
History and Geography
703,933
🗺️
60
General Technology
8,586
💡
61
Medicine and health
277,111
💉
62
Engineering and allied operations
140,868
🔩
63
Agriculture & related technologies
78,723
🌱
64
Home and family management
152,587
🏠
65
Management and auxiliary services
131,640
👔
66
Chemical Technology
17,794
🚀
67
Manufacturing
7,692
📦
68
Manufacture of products for specific uses
18,201
🔨
69
Building
10,930
👷
620
Engineering
19,566
🔩
621
Applied physics
42,616
🏭
622
Mining Engineering and Mines and Mineral Resources
3,424
🕳
623
Military Engineering and Marine Engineering
13,937
624
Civil Engineering
7,390
🌉
625
Road and Railroad
5,150
🛤
626
unassigned since 1911 7th Edition (was Canal Engineering)
72
🤷
627
Hydraulic Engineering
1,678
🌊
628
Sanitary; Municipal
6,571
🚽
629
Other Branches
40,464
🌿
621.0
1,143
621.1
Steam engineering
567
621.2
Hydraulic machinery
238
621.3
Electrical, magnetic, optical, communications, computer engineering; electronics, lighting
30,327
621.4
Heat engineering
3,663
621.5
Pneumatic machinery and Compressed air and Refrigeration and refrigerating machinery
415
621.6
Fans (Machinery) and Pumping machinery
142
621.7
Production engineering and Factories and Machine-shop practice
155
621.8
Machine Engineering
2,398
621.9
Machine-tools
1,300
621.30
Electric power plant
418
621.31
Generation, modification, storage, transmission of electric power
4,466
621.32
Lighting
356
621.33
Electric Railways
41
621.34
Magnets and Electromagnets
107
621.35
Batteries and Superconductivity
32
621.36
Optical engineering
2,657
621.37
Electrical Measurement Instruments
133
621.38
Electronics, communications engineering
18,275
621.39
Computer engineering
2,189
621.380
Light current engineering
216
621.381
Electronics
8,160
621.382
Communications
3,727
621.383
Telegrapy
36
621.384
Radar, Radio
3,311
621.385
Telephony
313
621.386
Telephone terminal equipment
46
621.387
Telephone transmission equipment
21
621.388
Television
699
621.389
Audio, sound engineering
935
621.3810
352
621.3811
9
621.3812
621.3813
266
621.3814
1
621.3815
3,973
621.3816
621.3817
180
621.3818
12
621.3819
457
621.38150
51
621.38151
52
621.38152
743
621.38153
419
621.38154
178
621.38155
621.38156
1
621.38157
621.38158
621.38159
9
621.381520
16
621.381521
621.381522
56
621.381523
2
621.381524
621.381525
621.381526
621.381527
621.381528
122
621.381529
621.3815220
1
621.3815221
621.3815222
621.3815223
621.3815224
621.3815225
621.3815226
621.3815227
621.3815228
621.3815229

Selected Works under MDS 621.381522 (56)

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.