A download Apple Quick Time Download manager is a computer program dedicated to the task of downloading Apple Quick Time Download (and sometime uploading) possibly unrelated stand-alone files from (and sometime Apple Quick Time Download to) the Internet for storage. This Apple Quick Time Download is unlike Apple Quick Time Download a World Wide Web browser, which is mainly intended to browse web pages, composed of a Apple Quick Time Download multitude of smaller files, Apple Quick Time Download where error-free moving Apple Quick Time Download of files for permanent storage is of secondary importance. (A failed Apple Quick Time Download or incomplete web page Apple Quick Time Download file rarely ruins the page.) The typical download manager at a minimum provides means to recover from errors Apple Quick Time Download without losing the work already completed, and can optionally split the file to be downloaded Apple Quick Time Download (or uploaded) into 2 or more segments, which are then moved in parallel, potentially making the process faster within the limits of the available bandwidth. (A few servers are Apple Quick Time Download known to block moving Apple Quick Time Download files in parallel segments, on the Apple Quick Time Download principle that server capacity should be shared equally by all users.) Multi-source is the name given to files that are downloaded in parallel.
There are several things that some web browsers are not very good at. That's Apple Quick Time Download where the Apple Quick Time Download download managers enter the equation:
Pausing the downloading of large files.
Resuming Apple Quick Time Download broken or paused Apple Quick Time Download downloads (especially for very large files).
Downloading files on poor connections.
Downloading several files from a site automatically according Apple Quick Time Download to simple Apple Quick Time Download rules (file types, Apple Quick Time Download updated files, etc. - see also Offline Browser).
Automatic recursive downloads (mirroring).
Scheduled downloads (including, Apple Quick Time Download automatic hang-up and shutdown).
Searching Apple Quick Time Download for mirror Apple Quick Time Download sites, and the handling of different connections to Apple Quick Time Download download the same file more quickly (segmented downloading).
Download managers are useful for active Internet users. For Apple Quick Time Download dial-up users, they can automatically dial Apple Quick Time Download the Apple Quick Time Download internet service Apple Quick Time Download provider at night, when rates or tariffs are usually lower, download the specified files, and hang-up. They can record which links the Apple Quick Time Download user clicks on during the day, and queue these files for later download. For broadband users, download managers can help download very large files by resuming broken downloads, by limiting the bandwidth used, so Apple Quick Time Download that other internet activities Apple Quick Time Download are not affected (slowed) and the server is not overloaded, or by automatically navigating a site and downloading pre-specified content (photo galleries, MP3 Apple Quick Time Download 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 of commonly used download managers. Some downloaders are optimized for a certain function. For example, Offline Explorer is designed to download entire websites.
Download managers, such as Go!Zilla, were Apple Quick Time Download 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 are designed to give users greater control over downloads, some Apple Quick Time Download downloaders are created to give that control to Apple Quick Time Download content distributors instead. Some software companies, for Apple Quick Time Download example Adobe Apple Quick Time Download [1], provide such downloaders for downloading software Apple Quick Time Download on Apple Quick Time Download their own site. Presumably this increases reliability and reduces tech support costs to them. A possible Apple Quick Time Download reason is increasing the control over redistribution of their Apple Quick Time Download software (even when the software is freeware).In computer technology and telecommunication, on-line and off-line are defined by Federal Standard 1037C. They are states or conditions of a "device Apple Quick Time Download or Apple Quick Time Download equipment" or Apple Quick Time Download of "a functional unit". To be considered on-line, a Apple Quick Time Download device must be at least one of:
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"Under the direct control of another device"
"Under the direct control of the system with which Apple Quick Time Download it is associated"
"Available for immediate use on demand by the system Apple Quick Time Download without human intervention"
"Connected to a system, and is in operation"
"Functional and Apple Quick Time Download ready for service"
while a device Apple Quick Time Download that is off-line is not (e.g. it has "its main power source disconnected or turned off", Apple Quick Time Download 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 "on-line" it will attempt Apple Quick Time Download to connect to Apple Quick Time Download mail servers (to check Apple Quick Time Download for new mail at regular intervals, for example), and when it is "off-line" it will Apple Quick Time Download not attempt to make any such connections. The "on-line" or "off-line" state of the MUA does not Apple Quick Time Download necessarily reflect the connection status between the computer on which it is running and Internet. The user may have the computer itself on-line, connected to Internet Apple Quick Time Download via a cable modem or an ADSL connection, but may wish for Outlook to be off-line, so that it makes no attempt to send or to receive messages. Or the computer may be configured to employ a dial-up connection on demand (whenever an application such as Outlook attempts Apple Quick Time Download to make connection to a server), but the connection may Apple Quick Time Download be an expensive telephone call Apple Quick Time Download from the particular location in which the computer currently happens to be (such as a hotel room) and the user may not wish Outlook to trigger 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 digital audio technology. A tape recorder, digital editor, or Famous Anonymous Wilderness Free Download other device that is "on-line" Apple Quick Time Download is one whose clock is under Apple Quick Time Download the control of the clock of a "synchronization master" device. When the sync master commences playback, Apple Quick Time Download the "on-line" device Apple Quick Time Download automatically synchronizes itself to the master and commences playing from the Download Free Hindi Mp3 Ringtone same point in the recording. Whereas a device that Apple Quick Time Download is "off-line" Apple Quick Time Download uses no external clock reference and relies upon its own internal Apple Quick Time Download clock. When a large number of devices are connected to a sync master, it is often Apple Quick Time Download convenient, if one wants to hear just Apple Quick Time Download the output of one single device, to take it off-line, because if the device is played back on-line all synchronized devices Apple Quick Time Download have to locate Apple Quick Time Download the playback Apple Quick Time Download point and wait for each other to Apple Quick Time Download be in synchronization.[2] (For further related Apple Quick Time Download discussion, see MIDI timecode, word sync, and recording system synchronization.)
A third example of a common use of these Apple Quick Time Download concepts Apple Quick Time Download is a Apple Quick Time Download web browser Apple Quick Time Download that can be instructed to be in either "on-line" or "off-line" states. The browser only attempts Apple Quick Time Download to fetch pages from servers whilst in the "on-line" state. In the "off-line" state, users can perform Apple Quick Time Download 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 Apple Quick Time Download 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, as a result of prior Apple Quick Time Download on-line browsing by Apple Quick Time Download the user, or explicitly by the Apple Quick Time Download browser being configured to Download Sap Ide keep local copies of certain web 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 Apple Quick Time Download intervals or by Apple Quick Time Download checking that the local copies are up-to-date whenever the browser is switched to the on-line state. One such web browser capable of being explicitly configured to download Apple Quick Time Download pages for offline browsing is Internet Explorer. When pages are Apple Quick Time Download added to the "Favourites" list, they can be marked for being made "available for offline browsing". Internet Explorer will download to local copies both the marked Apple Quick Time Download page and, optionally, all of the pages that it links to. In Internet Explorer version 6, the level of direct Apple Quick Time Download and indirect links, the maximum amount of local disc space allowed to be consumed, and Apple Quick Time Download the schedule on which local copies are checked to see whether they are Apple Quick Time Download up-to-date, are Apple Quick Time Download configurable Apple Quick Time Download for each individual "Favourite" entry.
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See also:
Offline browsing known as "Offline favourites" was removed as a feature in the most recent version of Internet Explorer 7, which only now supports single web page saving, but not Apple Quick Time Download browsing or storing Apple Quick Time Download an entire site offline.[citation needed]
Similarly, off-line storage Download Audio Old Testament Bible is computer storage that is not "available for immediate Apple Quick Time Download use on demand by the system Apple Quick Time Download without human intervention", i.e it is storage that Apple Quick Time Download is off-line.
The ideas of "on-line" and "off-line" have been generalized from computing and telecommunication into the field of human interpersonal Apple Quick Time Download relationships. The distinction between what Apple Quick Time Download is considered "on-line" and what is considered "off-line" has become a subject of study in the field Apple Quick Time Download of sociology.[7]
The distinction between "on-line" and "off-line" is conventionally seen as the distinction between computer-mediated communication and face-to-face communication (e.g. face time), respectively. Apple Quick Time Download "On-line" is virtuality, and "off-line" is reality (e.g. real life or meatspace). Slater Apple Quick Time Download states that this Apple Quick Time Download distinction is "obviously far too simple". To support his argument that the Cricket Flash Download distinctions in relationships are more complex Apple Quick Time Download than Apple Quick Time Download a simple "on-line"/"off-line" dichotomy, he observes that some people draw no distinction between an "on-line" relationship, such as indulging in cybersex, and an "off-line" relationship, such as being pen-pals. He also argues that even the telephone can Apple Quick Time Download be regarded Nz Video Download as an "on-line" Apple Quick Time Download experience in some circumstances, and that the Apple Quick Time Download blurring of the distinctions between Apple Quick Time Download the uses of various technologies (such as Apple Quick Time Download PDA and mobile telephone, television and Internet, and telephone and voice-over-IP) has made it "impossible to use Apple Quick Time Download the term 'on-line' meaningfully in Apple Quick Time Download the sense that was employed by the first Apple Quick Time Download generation of Internet research".[7]
Slater asserts that there Apple Quick Time Download are legal and regulatory pressures to Free Download Anti Spyware Win reduce the distinction between "on-line" and Apple Quick Time Download "off-line", with a "general tendency to assimilate online Vegetable Garden Layout Download to offline Free Songs Download To Pc and erase the distinction", stressing, however, that this does not mean that on-line relationships are being reduced to pre-existing off-line relationships. He conjectures that greater legal status may be assigned to on-line relationships (pointing out that contractual Apple Quick Time Download relationships, such as business transactions, on-line Apple Quick Time Download are already Apple Quick Time Download seen as just as Apple Quick Time Download "real" as their off-line counterparts), although he states it to be hard to imagine courts awarding palimony to Conveyancing Draft Contract Download people who have had Apple Quick Time Download a purely on-line Apple Quick Time Download sexual relationship. He also conjectures that an Apple Quick Time Download "on-line"/"off-line" distinction may be seen by people as "rather quaint and not quite comprehensible" within 10 years.[7]
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The distinction where "on-line" is seen as virtuality and "off-line" as reality is sometimes inverted, with "on-line" concepts being used to define Apple Quick Time Download and Apple Quick Time Download to explain "off-line" activities, rather than (as Apple Quick Time Download per the Apple Quick Time Download conventions of the desktop metaphor with its desktops, trash cans, folders, and so forth) the other way around. Apple Quick Time Download Several cartoons by The Apple Quick Time Download New Apple Quick Time Download Yorker have satirized this. One includes Saint Peter asking for a user name and a Apple Quick Time Download password before Apple Quick Time Download admitting a man Apple Quick Time Download into Heaven. Another illustrates "the off-line store" where "All Apple Quick Time Download Vocabulary Energizers Free Download items are actual size!", where shoppers may Apple Quick Time Download "Take Dino Island Game Download it home as soon Apple Quick Time Download as you pay for it!", and where "Merchandise Apple Quick Time Download may be handled prior to Apple Quick Time Download purchase!". |
