Communication
Articles about communication systems, signals and exchange of information.
Odia language
OK
Old Church Slavonic
Old Norse language
Old Norse: language of the Viking Age
Old Prussian language
Omega (Cyrillic)
Onomatopoeia
Onomatopoeia (words that imitate or suggest sounds)
Opt-out
Opt-out: consumer choices for stopping unwanted marketing and tracking
Oriya Wikipedia
Orthogonal frequency-division multiplexing
Orthogonal Frequency-Division Multiplexing (OFDM)
Orthographic depth
Orthography
OSI model
OSI model: Seven-layer framework for network communication
Ouija board
Oxymoron
Oxymoron: Contradictory Expressions in Language and Rhetoric
Ø
Ø (o with stroke) — Scandinavian letter
Packet
Packet (bundle and data unit)
Packet switching
Packet switching: principles, history, and applications
Pahari-Pothwari
Pakistani English
Panel
Panel — meanings, types, and uses (boards, control units, discussion groups, data)
Pangasinan language
Payphone
Pe (Cyrillic)
Pe (Cyrillic letter)
Pennsylvania German language
Period (punctuation)
Persian couriers
Persian couriers: mounted relay messengers of the Achaemenid realm
Persian language
Persian language (Farsi, Dari, Tajiki): overview, history, dialects and uses
Persian (Farsi/Dari/Tajiki) is a Western Iranian language with a long literary tradition. This article explains its varieties, writing systems, history, regional distribution, and
Persuasion
Persuasion: methods, history, uses, and ethical considerations
Phase-shift keying
Phase-Shift Keying (PSK): digital modulation by altering carrier phase
Phoenician language
Phoneme
Phoneme: the basic distinctive sound unit in spoken language
Phonetic transcription
Phonetics
Phonetics: the scientific study of speech sounds
Phonograph cylinder
Phonology
Phonology: the study of sound systems in language
Pidgin
Pidgin (contact language): overview, features, and examples
Piedmontese language
Pig Latin
Pig Latin: an English word game and playful speech form
PingOO
PingOO — a Debian-based communication server developed by CRI (Haute-Savoie)
Pinyin
Placard
Placard: meaning, forms, uses, and distinguishing features
Plain text
Plain text (unformatted textual data)
Plaintext
Plaintext (information before encryption)
Polish language
Portuguese language
A Romance language from Northwestern Iberia that became global through exploration and colonization; spoken in Europe, the Americas, Africa and Asia with diverse dialects and cultu
Post
Post: meanings, functions, and common uses
Post office
Post office: purpose, functions, history and modern role