A download manager is a computer program Brain School Download dedicated to the task of downloading (and sometime uploading) possibly unrelated stand-alone files from (and Brain School Download sometime to) the Internet for storage. This is unlike a World Wide Web browser, which is mainly intended to browse web pages, composed of Brain School Download a multitude of smaller Brain School Download files, where error-free Brain School Download moving of files for permanent Brain School Download storage is of secondary importance. (A failed Brain School Download or incomplete web page Brain School Download file Brain School Download rarely ruins the page.) The typical download manager at a minimum Brain School Download provides means to recover from errors without losing the work Brain School Download already completed, and can optionally split the file to be downloaded (or uploaded) into 2 or more segments, which are Brain School Download then moved Brain School Download in parallel, potentially making the process faster within the limits of the available bandwidth. (A few servers Brain School Download are known to block moving Aben Free Movie Download To Own files in parallel segments, on Naxjp Download the principle that server capacity should be shared equally Brain School Download by all users.) Brain School Download Multi-source Brain School Download is the name given to files that are downloaded in Brain School Download parallel.
There are Brain School Download several things that some web browsers Brain School Download are not very good at. Brain School Download That's where the download managers enter the equation:
Pausing the downloading Brain School Download of large Brain School Download files.
Resuming broken or paused downloads (especially for very large files).
Downloading files Brain School Download on poor Brain School Download connections.
Downloading several files from a site automatically Brain School Download according to simple rules (file types, updated files, etc. - see also Offline Browser).
Automatic Brain School Download recursive downloads (mirroring).
Scheduled downloads (including, automatic hang-up and shutdown).
Searching for mirror sites, and the handling of different connections to download Brain School Download the Brain School Download same file more quickly (segmented downloading).
Download managers are useful for active Internet users. For dial-up users, Brain School Download they can automatically dial the Brain School Download internet service provider at night, Brain School Download when rates or tariffs are usually lower, download the specified files, and Brain School Download hang-up. They can record Brain School Download which links the user Brain School Download clicks on during the day, and queue these files for later download. For broadband users, Brain School Download download managers can help download very large files by Brain School Download resuming broken downloads, Brain School Download by limiting the bandwidth used, Brain School Download so that other internet Brain School Download activities Brain School Download are not Download Chakde India affected (slowed) and the server is not overloaded, or 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 Brain School Download download managers support Metalink, an Brain School Download XML file listing mirrors, checksums, and other information useful for downloading.
See below for some examples Nod 32-free Download of commonly used download managers. Some downloaders are optimized for a certain function. For example, Offline Explorer is designed to download entire websites.
Download Brain School Download managers, such as Go!Zilla, were among the first adware applications displaying a banner ad in Brain School Download the user interface.
Related to download managers are Brain School Download 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 Brain School Download designed to give users greater control over downloads, some downloaders are created to give that control to content distributors instead. Some software companies, Brain School Download for example Adobe [1], provide such downloaders for downloading software on their own Brain School Download site. Presumably this Brain School Download increases reliability and reduces tech support costs to them. A Brain School Download possible reason is increasing the control Brain School Download over redistribution of their 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 Brain School Download Lords Of Magic Free Download or conditions of a "device or equipment" or of "a functional unit". To Brain School Download 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 which it is associated"
"Available for immediate use on demand by the system without human intervention"
"Connected to a system, and is in operation"
"Functional and ready for service"
while a device that is Brain School Download off-line is Brain School Download 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 Brain School Download 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 Brain School Download it is "on-line" it will attempt to connect Brain School Download to mail servers (to check for new mail Brain School Download at regular intervals, for example), and when Download Free Otis Redding Music it is "off-line" it will not attempt to make any such connections. The "on-line" or Brain School Download "off-line" state of the MUA does not necessarily reflect the connection status between Brain School Download the computer on which Brain School Download it is running and Internet. The user may Brain School Download have the Brain School Download computer itself Brain School Download on-line, Brain School Download connected to Internet via a Brain School Download cable modem or an ADSL connection, but Brain School Download may wish for Outlook to be off-line, so that it makes no attempt to send or to receive Brain School Download messages. Or the computer Brain School Download may be configured to employ a dial-up connection on demand (whenever an application such as 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 Brain School Download to be Brain School Download (such as a hotel room) and the user may not wish Brain School Download Outlook to trigger making that call every 5 or 10 minutes Brain School Download to check for mail.[1]
Another example of the use Brain School Download of these concepts is in the world of Brain School Download digital audio technology. A tape recorder, digital editor, Brain School Download or Video Grabber Download other device that is "on-line" is one whose clock is under the control of the clock of a "synchronization Brain School Download master" device. Brain School Download When Brain School Download the sync master commences playback, the Brain School Download "on-line" device automatically synchronizes itself to the master and commences playing from the same point in the recording. Whereas a device that is "off-line" uses no external clock reference Brain School Download and relies upon its own internal clock. When a large Brain School Download number of devices are connected to a sync master, it is Brain School Download often convenient, if one wants to hear just the output of one single device, to Brain School Download take it off-line, because if the device is played back on-line all synchronized devices have to locate the playback point and wait for each other to be in Brain School Download synchronization.[2] (For further related discussion, see MIDI timecode, word sync, and recording system synchronization.)
A third example of a common use of these Brain School Download concepts is a Casanova Download web browser that can be instructed to be in either "on-line" or "off-line" states. The browser only attempts to Brain School Download fetch pages from servers whilst in Brain School Download the "on-line" state. Brain School Download In the "off-line" state, users can perform offline browsing, where pages can be browsed using local copies of Brain School Download those pages that have previously Movies Download For Free been downloaded whilst in the "on-line" state. This can be useful when the computer itself is also off-line, Brain School Download 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, Brain School Download or explicitly by the browser being configured to keep Brain School Download local copies of certain web pages, which it keeps updated when Brain School Download the browser is in the on-line state, Brain School Download either by checking that the local copies are up-to-date Brain School Download at regular intervals or by checking that the local copies are Brain School Download up-to-date whenever the browser is Brain School Download switched to the Vip Hitovi Leta Download on-line state. One such web browser capable of being explicitly configured to download pages for offline browsing is Internet Explorer. When pages Brain School Download are added to the "Favourites" list, they can be marked for being made "available for offline browsing". Internet Explorer will Brain School Download download to Brain School Download local copies both the marked page and, optionally, all of the pages that it links to. In Internet Brain School Download Explorer version 6, the level 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 Brain School Download configurable for each individual "Favourite" entry.
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 browsing Brain School Download or storing an entire site offline.[citation needed]
Similarly, off-line storage is computer storage that is not "available for immediate use on demand by the Brain School Download system without human intervention", i.e it is storage that is off-line.
The ideas of "on-line" and "off-line" have Brain School Download Download C-force been generalized from computing and telecommunication into the field of human interpersonal relationships. Brain School Download The distinction between what is considered Brain School Download "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 distinction between computer-mediated communication and face-to-face communication (e.g. face time), respectively. "On-line" is virtuality, and "off-line" is Crack Trial Download Games Codes reality (e.g. real life or meatspace). Slater states that this distinction is "obviously far too simple". To support Brain School Download his argument Brain School Download that the distinctions in relationships are more complex than a Brain School Download simple "on-line"/"off-line" dichotomy, Brain School Download he observes Brain School Download 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 Brain School Download be Pokemon Ruby Download regarded as an "on-line" experience in some circumstances, and that the blurring of the distinctions between the uses of various technologies Brain School Download (such Brain School Download 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 Brain School Download the sense that was employed by Brain School Download the first generation of Internet research".[7]
Slater asserts that there are legal and regulatory pressures to reduce the distinction between "on-line" and "off-line", with Brain School Download a "general Brain School Download tendency to assimilate online to offline 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 relationships, such Brain School Download as business Brain School Download transactions, on-line are already Brain School Download seen as just Brain School Download as "real" as their off-line counterparts), although Brain School Download he Brain School Download states it to be hard to imagine courts Brain School Download awarding palimony to people Brain School Download who Brain School Download have had a purely Brain School Download on-line sexual Brain School Download relationship. He also conjectures 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 reality is sometimes inverted, with "on-line" concepts being Brain School Download used to define and to explain "off-line" activities, rather than (as per the conventions of the desktop metaphor with its desktops, Brain School Download trash cans, folders, Brain School Download and Brain School Download so forth) the other way around. Several cartoons by The New Yorker have satirized this. One includes Brain School Download Saint Peter asking for a user name and a password before admitting a man into Heaven. Another illustrates "the off-line store" where "All items are actual Brain School Download size!", where shoppers may "Take it Brain School Download home as soon as you pay for it!", and where "Merchandise may be handled prior to purchase!". |
