A download manager Dsj Download is a computer program dedicated to the task of downloading (and sometime uploading) possibly Dsj Download unrelated 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 web pages, composed of a multitude of smaller files, where error-free moving of files Dsj Download for permanent storage is of secondary importance. (A failed or incomplete web Dsj Download page file rarely ruins the page.) The typical download manager Dsj Download at a minimum provides means to recover from errors without losing the Dsj Download work already completed, and can optionally split the file to be downloaded (or uploaded) into 2 or more segments, which are then moved in parallel, Dsj Download potentially making the process faster within the limits Dsj Download of the available bandwidth. (A few servers are Dsj Download known to Dsj Download block Dsj Download moving files in parallel segments, on the Dsj Download principle that server capacity should be shared equally by all users.) Free Download Nero Burner Multi-source is the name given to Dsj Download files Dsj Download that are downloaded in parallel.
There are several things that some web browsers are not very good at. That's Dsj Download where the download managers enter the 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 Dsj Download (file types, updated files, Dsj Download etc. - see also Offline Browser).
Automatic recursive downloads (mirroring).
Scheduled downloads (including, automatic hang-up and shutdown).
Searching for mirror sites, and the handling of different connections to download the same file more quickly (segmented downloading).
Download managers are useful for active Internet users. For 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 can record which links the user clicks on during the day, and queue these files for later download. Dsj Download For broadband users, download managers can Dsj Download 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 Dsj Download is not overloaded, or by automatically navigating a site Dsj Download 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, checksums, and other information useful for downloading.
See below for some examples Dsj Download of commonly used download managers. Some downloaders Dsj Download are Dsj Download optimized for a certain function. For example, Offline Explorer is Dsj Download designed to download entire websites.
Download managers, such as Go!Zilla, were among the first adware applications displaying a banner ad in the user 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 Dsj Download are designed to give users greater control over downloads, some downloaders are created to give that Dsj Download control to content distributors instead. Some software companies, for example Adobe [1], provide such downloaders for downloading software on their own site. Presumably Dsj Download this increases reliability and reduces tech support Dsj Download costs Dsj Download to them. A possible reason is increasing the control over redistribution of Dsj Download their software (even Dsj Download when the software is freeware).In computer technology and telecommunication, on-line and off-line are defined by Federal Standard 1037C. They Dsj Download are states or conditions of a "device Dsj Download 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 Form W Download another device"
"Under the direct Free Download Calendars control of the system with which it Dsj Download is associated"
"Available for immediate use on demand by the system without human intervention"
"Connected to a system, and is in operation"
"Functional and Dsj Download ready for service"
while a device that is off-line is not (e.g. it has "its main power source disconnected or turned off", and is "off-power").
One example of a common use of these concepts is a Mail User Agent that can be instructed to be in either "on-line" or "off-line" states. One such MUA is Microsoft Outlook. When it is Dsj Download "on-line" Dsj Download it will Dsj Download attempt to Dsj Download connect to mail servers (to check for new mail at Dsj Download regular intervals, for example), and when it is "off-line" it Dsj Download will not attempt Dsj Download to make any Dsj Download such connections. The "on-line" or "off-line" state of the MUA does not necessarily reflect the connection status Dsj Download between the computer on which it is running and Internet. The user may have the computer itself on-line, connected Dsj Download to Internet via a cable Dsj Download modem or an ADSL connection, but may wish for Outlook to be off-line, so that it makes no attempt to send or to Dsj Download receive Dsj Download messages. Or Dsj Download the computer may be configured to employ a dial-up Dsj Download connection on demand Dsj Download (whenever an application such as Outlook attempts to make connection to a server), but the connection may be Dsj Download an expensive telephone call from the particular Dsj Download location in which the computer currently happens to be (such as Dsj Download a hotel Dsj Download room) and the user may not wish Outlook to trigger making that call Dsj Download every 5 or 10 minutes to check for Dsj Download mail.[1]
Another example Dsj Download of the use of Dsj Download these concepts is in the world of digital audio technology. Dsj Download A tape recorder, digital editor, or other device that is "on-line" is one whose clock is under the control Dsj Download of the clock Dsj Download of Dsj Download a "synchronization master" device. When the sync master commences playback, Download Dbz Rpg the "on-line" device automatically synchronizes itself to the master and commences playing from the same point in the recording. Whereas a Dsj Download device that is "off-line" uses Dsj Download no external clock reference and relies upon its own internal clock. When a large number of devices are connected to a sync master, it is often convenient, if one wants to hear just the Dsj Download output of one single device, to take it off-line, because if the Dsj Download device is played back on-line all synchronized Dsj Download devices have to locate the playback point and wait for each other Dsj Download to be in synchronization.[2] (For further related discussion, see MIDI timecode, word sync, Dsj Download and Dsj Download recording Dsj Download system synchronization.)
A third example Dsj Download of a common use of these concepts is a web browser Dsj Download that can be instructed to be in either Dsj Download "on-line" or "off-line" states. The Dsj Download browser only attempts Dsj Download to fetch pages from servers whilst in the "on-line" state. In the "off-line" state, users can perform offline browsing, where pages can be browsed using local copies Dsj Download of those pages that have previously been downloaded whilst in the "on-line" state. This can Dsj Download be useful when the computer Dsj Download itself Dsj Download is also off-line, with connection to Internet expensive or impossible. The pages are either downloaded implicitly into the web browser's own cache, as a result of prior on-line browsing by the user, or explicitly by the browser being configured to keep local copies of certain Dsj Download web Dsj Download pages, which it keeps updated when the browser is in the on-line state, either by checking that the local copies are up-to-date at regular intervals or by checking that Dsj Download the local copies are up-to-date whenever the Dsj Download browser is switched to the on-line state. One such web browser capable of Dsj Download 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 to local copies both Dsj Download the Dsj Download marked page and, optionally, all of Dsj Download the pages that it links to. In Internet Explorer version 6, the Dsj Download level of direct and indirect links, the maximum amount of local disc space allowed to be consumed, and the schedule Dsj Download on Dsj Download which local copies are checked to see whether they are up-to-date, are configurable for each individual "Favourite" entry.
See also:
Offline browsing known as "Offline favourites" was removed as Dsj Download a feature Undisputed Mp3 Download Bring It On in the most recent version of Internet Explorer 7, which only now supports single web page saving, but not Dsj Download browsing or storing an entire site Dsj Download offline.[citation Dsj Download needed]
Similarly, off-line Dsj Download storage is computer storage that Dsj Download is not "available for immediate use Dsj Download on demand by the system Dsj Download without Dsj Download human intervention", i.e it is storage Dsj Download that is off-line.
The ideas of "on-line" and "off-line" have been generalized Dsj Download from computing and telecommunication into the field of human interpersonal relationships. The distinction between what Dsj Download is considered "on-line" and what is considered "off-line" has become a subject of study in the field of sociology.[7]
The distinction between "on-line" and "off-line" is conventionally seen as the Dsj Download distinction between computer-mediated Dsj Download communication and face-to-face communication (e.g. face time), respectively. "On-line" is virtuality, and "off-line" Dsj Download is Dsj Download reality (e.g. real life or meatspace). Dsj Download Slater states that this distinction is "obviously far too simple". To support his argument that the Sabayon Download distinctions in relationships are more complex than Dsj Download a simple "on-line"/"off-line" dichotomy, he observes that some people draw no distinction between Dsj Download an "on-line" relationship, such Dsj Download as indulging in cybersex, and an "off-line" relationship, such as being pen-pals. He also argues Dsj Download that even the telephone can Dsj Download be regarded as an Dsj Download "on-line" experience Dsj Download in Dsj Download some circumstances, and that the blurring of the distinctions Dsj Download between Dsj Download the uses of various Dsj Download technologies (such as 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 research".[7]
Slater asserts that Dsj Download there are legal and regulatory pressures to reduce the distinction between "on-line" and "off-line", with Dsj Download a "general tendency to assimilate online to Dsj Download offline and erase the distinction", stressing, Dsj Download however, Dsj Download that this Dsj Download does not mean that on-line relationships are being reduced to pre-existing off-line relationships. He Dsj Download conjectures that greater legal status may be assigned to Dsj Download on-line relationships (pointing out that contractual relationships, such as business Dsj Download transactions, on-line are Dsj Download already seen as just as "real" Dsj Download as their off-line counterparts), although he states it to be hard to imagine courts awarding Dsj Download palimony to people who have had a purely Dsj Download on-line sexual relationship. He also conjectures Dsj Download that an "on-line"/"off-line" distinction may be seen by people as "rather quaint and not quite comprehensible" within 10 years.[7]
The distinction where "on-line" is seen as virtuality and "off-line" as Dsj Download reality is sometimes inverted, with "on-line" concepts being used to define and to explain "off-line" activities, rather than (as per the conventions of the desktop metaphor with its desktops, trash cans, folders, and so Dsj Download forth) the other way around. Several cartoons by The New Yorker have satirized Dsj Download this. One Dsj Download includes Saint Peter asking for a user name Dsj Download and a password before admitting a man into Heaven. Another illustrates "the off-line store" where "All items are actual size!", where shoppers may "Take it home as soon as you pay for it!", and where "Merchandise may be handled prior to purchase!". |
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