384 384
1
.3 *Computer communication
Transfer of computer-based information by any of various media ( e.g., coaxial
cable or radio waves) from one computer to another or between computers and
terminals
Class here computer communications networks, links between computers via
telephone lines
Class interdisciplinary works on computer communications in 004.6
See Manual at 004.6 vs. 384.3
.33 Activities and services
Standard subdivisions are added for either or both topics in heading
Including videotex [formerly 384.35], Internet telephony [formerly 384.6],
network neutrality, services of value-added networks
Class here social media
For electronic mail, point-to-point communications, see 384.34; for
discussion groups, broadcast communications, see 384.36; for computer
communications in multimedia systems, see 384.38
See Manual at 004.678 vs. 006.7, 025.042, 384.33
.34 *Electronic mail
Class here point-to-point communications, comprehensive works on
electronic mail
Class interdisciplinary works on electronic mail in 004.692; class e-mail lists
in 384.36
For a specific kind of electronic mail, see the kind, e.g., postal facsimile
transmission 383.141
[.35] Videotex
Relocated to 384.33
.36 *Discussion groups
Class here chat groups, electronic bulletin boards, Internet forums, e-mail
lists, newsgroups; broadcast communications
Class electronic mail in 384.34
.38 *Computer communications in multimedia systems
Including blogs, wikis, online social networks
.53 *Radiotelephony
Including ship-to-shore communication, citizens band radio; text messaging
Class here mobile telephones
**Add as instructed under 380
