A download manager is a computer Download Limitlogon program dedicated to the task of downloading (and sometime uploading) possibly unrelated Download Limitlogon stand-alone files from (and sometime to) the Internet for storage. This is unlike a World Wide Web browser, which is mainly intended to browse Download Limitlogon web pages, composed of a multitude of smaller files, Download Limitlogon where error-free moving of files for permanent storage is of secondary importance. (A Download Limitlogon failed or incomplete web page file rarely ruins the page.) Download Limitlogon The typical download manager at a minimum Siol File Test Download provides means to recover from errors without losing the work already completed, and can optionally split the file to be downloaded (or uploaded) into 2 or more segments, Download Limitlogon which are then moved in parallel, potentially making the process Download Limitlogon faster within the limits of Download Limitlogon the available bandwidth. (A few servers are known to block moving files in parallel segments, Download Limitlogon on the principle that server capacity should be shared equally by all users.) Multi-source is the name Download Limitlogon given to files that are downloaded in Download Limitlogon parallel.
There are several things that some web browsers are not very good at. That's where the download managers enter the Download Limitlogon equation:
Pausing the downloading of large files.
Resuming broken or paused downloads (especially for very large files).
Downloading files on poor connections.
Downloading several files from a site automatically according to simple rules (file types, updated files, Download Limitlogon etc. - see also Offline Browser).
Automatic recursive downloads (mirroring).
Scheduled downloads (including, automatic Download Limitlogon hang-up and shutdown).
Searching Download Limitlogon for mirror sites, and the handling of different connections to download the same file more quickly (segmented downloading).
Download managers Download Limitlogon are useful for active Internet users. For Download Limitlogon dial-up users, they can automatically dial the internet service provider at night, when rates or tariffs are usually lower, download the specified files, and hang-up. They Download Limitlogon can record which links the user clicks on during the day, and queue these files for Download Limitlogon later Download Limitlogon download. For broadband users, download managers can help download very large files by resuming broken downloads, by limiting the bandwidth used, so that other internet activities are not affected (slowed) and the server is not overloaded, or Download Limitlogon by automatically navigating a site and downloading pre-specified content (photo galleries, MP3 collections, etc.) this can also include automatically downloading whole sites and regularly updating them (see Mirroring).
Many download managers support Metalink, an XML file listing mirrors, Download Limitlogon checksums, and other information useful for downloading.
See below for some examples of commonly used download managers. Some downloaders are optimized for a certain function. For example, Offline Download Limitlogon Explorer is designed to download entire websites.
Download managers, such as Go!Zilla, were Download Limitlogon among the first Download Limitlogon adware applications Download Limitlogon displaying a banner ad in Download Limitlogon the user Download Limitlogon interface.
Related to download managers are two other breeds of Internet programs, file-sharing peer-to-peer applications (Kazaa, eMule, BitTorrent, Gnutella) and stream recorders (such as StreamBox VCR).
While download managers are designed to give users greater control over downloads, some downloaders are created to give that control to content distributors instead. Some software companies, for example Adobe [1], provide such downloaders for downloading software on Download Limitlogon their own site. Presumably this Download Limitlogon increases reliability and reduces tech Download Limitlogon support costs to them. A Download Limitlogon possible reason is increasing the control over redistribution of their software (even when the software is freeware).In Download Limitlogon computer technology and Download Oregon Trail For Free telecommunication, on-line and off-line are defined by Federal Standard 1037C. They are states or Download Limitlogon conditions of a "device or equipment" or of "a functional unit". To be considered on-line, a device must be at least one of:
"Under the direct control of another device"
"Under the direct control of the system with Download Limitlogon which Download Limitlogon it is associated"
"Available for immediate use Download Limitlogon on demand Download Limitlogon by the system without human intervention"
"Connected to a system, and is in operation"
"Functional and ready for service"
while a device that is off-line is not Download Limitlogon (e.g. it has "its main power Accelerator Download Internet source disconnected or turned off", and is "off-power").
One example of a common use of these concepts is a Mail User Agent that Download Limitlogon can be instructed to be in Download Limitlogon either "on-line" or "off-line" states. Tangent Download One such MUA is Microsoft Outlook. Download Limitlogon When Download Limitlogon it is "on-line" Download Limitlogon it Download Limitlogon will attempt to connect to mail servers (to check for new mail at regular intervals, for example), and when it is "off-line" it will Download Limitlogon not attempt to make any such connections. The "on-line" or "off-line" Download Limitlogon state of the MUA does not necessarily reflect the connection status between the computer on Download Limitlogon which it is running and Internet. The user may have the computer itself on-line, connected to Internet via a cable modem or an ADSL connection, but may wish for Download Limitlogon Outlook to be off-line, so that it makes no Download Limitlogon attempt to send or to receive messages. Or the computer may be configured to employ a dial-up connection on demand Download Limitlogon (whenever an application such as Download Limitlogon Outlook attempts to make connection to a server), but the connection may be an expensive telephone call from the particular location in which the computer currently happens to be (such Download Limitlogon as a Download Limitlogon hotel Download Limitlogon room) and the user may not wish Outlook to trigger Download Limitlogon making that call every 5 or 10 minutes to check for mail.[1]
Another example of the use of these concepts is in the world of Download Limitlogon digital audio Download Limitlogon technology. A tape recorder, digital editor, or Download Limitlogon other device that is "on-line" is one whose clock is under the control of the clock of a Download Limitlogon "synchronization master" device. When the sync master commences playback, the "on-line" device automatically synchronizes itself to the master and commences playing from Download Limitlogon the same Download Limitlogon point in the recording. Whereas a device that is "off-line" uses Download Limitlogon no external clock reference and relies upon its own internal clock. When a large number Download Limitlogon of devices are Download Limitlogon connected to a sync master, it is often convenient, if one wants to hear just the Download Limitlogon output of one single device, to take it off-line, because if the device is played back on-line all synchronized devices have to locate Download Limitlogon the playback point and wait for each other to be in synchronization.[2] (For further related discussion, see MIDI timecode, word sync, Download Limitlogon and recording system Download Limitlogon synchronization.)
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A third example of a common use of these concepts is a web browser that can be Download Limitlogon instructed to be in either "on-line" or "off-line" states. The browser only attempts to fetch pages from Download Limitlogon servers whilst Download Limitlogon in the "on-line" state. In the "off-line" state, users can perform offline browsing, where pages can be browsed using local copies of those pages that have previously been downloaded whilst in the "on-line" state. This can be useful when the computer itself is also off-line, with connection to Internet expensive or impossible. The pages are either downloaded implicitly into the web browser's own cache, Download Limitlogon as a result of prior on-line Download Limitlogon browsing by the user, or explicitly Download Limitlogon by the browser being configured to keep local copies of certain Download Limitlogon web pages, which it keeps updated Download Limitlogon when the browser is in the on-line Download Limitlogon state, either by checking that the Download Limitlogon local copies are up-to-date at regular intervals Download Limitlogon or Download Limitlogon by checking that the local copies are up-to-date whenever the Download Limitlogon browser is switched to the on-line state. One such web browser capable of being explicitly configured to download pages for offline browsing is Internet Explorer. When pages are added to the "Favourites" list, they can be marked for being made "available for offline browsing". Internet Explorer will Download Limitlogon download to local copies both the marked page and, optionally, all of the pages that it links to. In Internet Explorer version 6, Download Limitlogon the level Download Limitlogon of direct and indirect links, the maximum amount of local disc space allowed to be consumed, and the schedule on which local copies are checked to see whether they are up-to-date, are Download Limitlogon configurable for each individual Download Limitlogon "Favourite" entry.
See also:
Offline browsing known as "Offline favourites" was removed as a feature Blue Pokemon Download in the most recent version of Internet Explorer 7, which only Download Limitlogon now supports single web page saving, but not browsing or storing an entire site offline.[citation needed]
Similarly, off-line storage is Download Limitlogon computer Download Limitlogon storage that is not "available for immediate use on demand by the system without Download Limitlogon human Download Limitlogon intervention", i.e it is storage that is off-line.
The ideas of "on-line" and "off-line" have been generalized from computing and telecommunication Download Limitlogon into the field of human interpersonal Download Limitlogon relationships. The Download Limitlogon distinction between what Download Limitlogon is considered "on-line" and what is considered "off-line" has Download Limitlogon become Download Limitlogon a subject of study in the field of Download Limitlogon sociology.[7]
The distinction between "on-line" and "off-line" is conventionally Download Limitlogon seen as the distinction between computer-mediated communication and face-to-face communication Download Limitlogon (e.g. face time), respectively. "On-line" Download Limitlogon is virtuality, and "off-line" is reality (e.g. real life Download Limitlogon or meatspace). Slater states that this distinction is "obviously far too simple". To support his argument that the distinctions in relationships are more complex Download Limitlogon than a simple "on-line"/"off-line" dichotomy, he observes that some people Download Limitlogon draw no distinction between an "on-line" relationship, such as indulging in cybersex, and an "off-line" relationship, Download Limitlogon such as being pen-pals. He also argues that even the telephone can be regarded as an "on-line" experience in Download Limitlogon some circumstances, and that the blurring of the Download Limitlogon distinctions between the uses of various technologies (such Download Limitlogon as Download Limitlogon PDA and mobile telephone, television and Internet, and telephone and voice-over-IP) has made it "impossible to use the term 'on-line' meaningfully in the sense that was employed by the first generation of Internet Download Limitlogon research".[7]
Slater asserts that there are Download Limitlogon legal and regulatory Download Limitlogon pressures to reduce the distinction between "on-line" and "off-line", with Download Limitlogon a "general tendency to assimilate online to offline and erase the distinction", stressing, Download Limitlogon however, that this does not mean that Download Limitlogon on-line relationships are being reduced to pre-existing off-line relationships. He conjectures that greater legal status may be assigned to on-line Download Limitlogon relationships (pointing out that contractual relationships, such as Download Limitlogon business transactions, on-line Download Limitlogon are already seen as just as "real" as their off-line Download Limitlogon counterparts), although he states it to be hard to imagine courts awarding palimony to people Download Limitlogon who have had Download Limitlogon a purely on-line sexual Download Limitlogon relationship. He also conjectures that an "on-line"/"off-line" Download Limitlogon distinction Download Limitlogon may be Download Limitlogon seen Download Limitlogon by Download Limitlogon people as "rather quaint Download Limitlogon and not quite comprehensible" within 10 years.[7]
The distinction where Download Limitlogon "on-line" is seen as virtuality and "off-line" as Download Limitlogon reality is sometimes inverted, with "on-line" concepts being used to define and to explain "off-line" activities, rather Download Limitlogon than (as per the conventions of Download Database the desktop metaphor with its desktops, trash cans, folders, and so forth) the other way around. Download Limitlogon Several cartoons Download Limitlogon by The New Yorker have satirized this. One includes Saint Peter asking Download Limitlogon for Download Limitlogon a user name Download Limitlogon and a password before admitting a man into Heaven. Another illustrates "the off-line Download Limitlogon store" where Download Limitlogon "All items are actual size!", where shoppers may "Take it home as soon as you pay for it!", and where "Merchandise may be handled Weight Watchers Points Download prior to purchase!". |
