Message
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A message is a discrete unit of communication intended by the source for consumption by some recipient or group of recipients. A message may be delivered by various means, including courier, telegraphy, carrier pigeon and electronic bus. A message can be the content of a broadcast. An interactive exchange of messages forms a conversation.
One example of a message is a communiqué (pronounced /kəˈmjuːnɪkeɪ/), which is a brief report or statement released by a public agency.
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Roles in human consumption[edit]
In communication between humans, messages can be verbal or nonverbal:
- A verbal message is an exchange of information using words. Examples include face-to-face communication, telephone calls, voicemails, etc.
- A nonverbal message is communicated through actions or behaviors rather than words, e.g. by the use of body language.
In computer science[edit]
There are two main senses of the word "message" in computing: messages between the human users of computer systems that are delivered by those computer systems, and messages passed between programs or between components of a single program, for their own purposes.
- Instant messaging and e-mail are examples of computer software designed for delivering human-readable messages in formatted or unformatted text, from one person to another.
- Message passing is a form of communication used in concurrent and parallel computing, object-oriented programming, and interprocess communication, where communication is made by sending messages to recipients. In a related use of this sense of a message, in object-oriented programming languages such as Smalltalk or Java, a message is sent to an object, specifying a request for action.
See also[edit]
- Airmail
- Amateur radio emergency communications
- Beacon
- Communications satellite
- Communication studies
- Drum (communication)
- Emergency Alert System
- Encryption
- Express mail
- Instant messaging
- Interstellar messages
- Message in a bottle
- Packet (information technology)
- Pioneer plaque
- Pony Express
- Radio
- Semaphore
- Semiotics
- Sign language
- Smoke signals
- Steamshipping
- Telegraphy
- Telephony
- Television
- Text messaging
- Wind-powered shipping
message