In computer and telecommunication technologies, online shows the state of connectivity , and offline indicates disconnected circumstances, especially internet connections.
Online and offline are determined by Standard 1037C. They are conditions or conditions of "devices or equipment" or "functional units". In order to be considered online, one of the following may apply to a system: it is under the direct control of other devices; it is under the direct control of the associated system; or available for immediate use as requested by the system without human interference.
Conversely, offline devices do not meet any of these criteria (for example, the primary resource is disconnected or disabled, or is not working).
The Oxford Dictionary defines "online" (sometimes also referred to as "On the Line") as "controlled by or connected to a computer" and as an activity or service "available or performed using the Internet or other computer networks". The term is used in terms like this: "online identity", "online predator", "online gambling", "online shopping", "online banking", and "online learning". The online context is given to other words with the prefix "cyber" and "e", as in "cyberspace", "cybercrime", "email", and "ecommerce".
Video Online and offline
Anteseden
During the 19th century, the term "on line" was generally used both in rail and telegraph industries. For railroads, a signal box will send a message down the line (line), via a telegraph line (cable), indicating the status of the track: "Train on line" or "Line clear". Telegraph linemen will refer to the delivery of current through the channel as "direct on line" or "battery on line"; or they may refer to a problem with the circuit as "on line", as opposed to a power source or end point equipment.
Maps Online and offline
Example
Offline email
One example of a common use of these concepts with email is the email user agent (MUA) that can be instructed to be in an online or offline state. One such MUA is Microsoft Outlook. When online, it will try to connect to the mail server (to check for new emails regularly, for example), and when offline will not try to make such connections. The online or offline status of the MUA does not necessarily reflect the connection status between the computer running it and the internet. That is, the computer itself may be online - connect to the Internet via cable modem or other means - while Outlook is kept offline by the user, so it does not attempt to send or receive messages. Similarly, computers can be configured to use dial-up connections on demand (such as when an application like Outlook tries to connect to a server), but users may not want Outlook to trigger the call every time it is configured to check mail.
Offline media play
Another example of using these concepts is digital audio technology. A cassette recorder, digital audio editor, or other online device is a device whose clock is under the control of the synchronized master device clock. When the sync master starts playback, the online device automatically synchronizes itself to the master and starts playing from the same point in the recording. The offline device does not use an external clock reference and depends on its own internal clock. When a large number of devices connect to the sync master, it is often easy, if one wants to only hear the output of one device only, to make it offline because, if the device is played back online, all synchronized devices must find the playback point and wait for each other device to be in sync. (For related discussions, see MIDI time code, word sync, and sync recording system.)
Offline browsing
A third example of the general use of these concepts is a web browser that can be instructed to be in an online or offline state. The browser tries to fetch pages from the server only in an online state. In an offline state, users can perform offline search , where pages can be viewed using local copies of previously downloaded pages while in online status. This can be useful when the computer is offline and the connection to the Internet is not possible or undesirable. The pages are downloaded implicitly into the web browser's own cache as a result of previous online searches by users or explicitly by a browser configured to store local copies of specific web pages, which are updated when the browser is online, either by checking that local copy updated on a regular basis or by checking that local copies are updated every time the browser is redirected to an online state. One explicitly configurable web browser for downloading pages for offline search is Internet Explorer. When a page is added to the Favorites list, they can be marked as "available for offline search". Internet Explorer will download to the local copy both the marked pages and, optionally, all linked pages. In Internet Explorer version 6, the level of direct and indirect links, the maximum amount of local disk space that is allowed to be consumed, and the schedule when the local copy is checked to see if it is updated, can be configured for each individual Favorite entry.
For communities that do not have sufficient internet connectivity - such as developing countries, rural areas, and prisons - offline information storage such as the eGranary Digital Library (a collection of about thirty million educational resources from over two thousand websites and hundreds of CD-ROMs) offline access to information. Many organizations have developed or developed flash memory chips with a collection of educational materials for offline use on smartphones, tablets and laptops.
Offline storage
Similarly, offline storage is a computer data storage that is not "available for immediate use on demand by the system without human intervention." In addition, other online systems that are turned off may be considered offline.
Offline messages
With growing media and communication tools, offline and online words are used very often. If someone is active through a messaging tool and can receive the message it is referred to as an online message and if the person is unavailable and a message is left to see when that person returns, it is referred to as an offline message. In the same context, the availability of that person is termed online and non-availability is referred to as offline.
Generalize
The difference between online and offline has been generalized from computing and telecommunication to the field of human interpersonal relationships. The difference between what is considered online and what is considered to be offline has been the subject of study in the field of sociology.
The difference between online and offline is conventionally seen as the difference between computer-mediated communication and face-to-face communication (eg, face time), respectively. Online is virtuality or cyberspace, and offline is reality (ie real life or meatspace). Slater states that this distinction is "obviously too simple". To support his argument that differences in relationships are more complex than simple dichotomies online versus offline, he observes that some people do not distinguish between online relationships, such as indulging in cybersex, and offline relationships, such as being pen pals. He argues that even phones can be considered an online experience in some circumstances, and that the blurring of the differences between the use of various technologies (such as PDAs versus mobile phones, internet versus internet versus telephone versus Voice over Internet Protocol) has made it "impossible to use the term online meaningfully in the sense used by first generation Internet research ".
Slater insists that there are legal and regulatory pressures to reduce the difference between online and offline, with "the general tendency to assimilate online to offline and clear the differences," stressing, however, that this does not mean that online relationships are being reduced to has been there before. He thinks that greater legal status can be assigned to online relationships (indicating that contractual relationships, such as business transactions, online already look "real" as their offline counterparts), although he claims it becomes difficult to imagine a court giving palimony to people who have purely online sex. He also suspects that the difference in online/offline can be seen by people as "a bit weird and not quite understood" in 10 years.
This difference between online and offline is sometimes reversed, with the online concept used to define and describe offline activities, rather than (in accordance with desktop metaphor conventions with desktops, trash, folders , and so on) vice versa. Some of the cartoons that appear on The New Yorker have quipped this. One includes St. Peter's requesting a username and password before entering a man into Heaven. Others illustrate the "off-line store" where "All the goods are the real size!", Buyers can "Take it home as soon as you pay!", And "Merchandise can be handled before buying!"
See also
References
Source of the article : Wikipedia
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