A download manager is a computer program dedicated to the task of downloading Java Api Download (and sometime uploading) possibly unrelated stand-alone files from (and sometime to) the Internet for storage. This is Java Api Download unlike a World Wide Web browser, which is mainly intended to Java Api Download browse web pages, composed of a multitude of smaller files, where error-free moving of Java Api Download files Java Api Download for permanent storage is of secondary importance. (A Java Api Download failed or incomplete web page file rarely ruins the page.) The typical download manager at a minimum 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, which are then moved in parallel, potentially making the process Java Api Download faster Java Api Download within the limits of the available bandwidth. (A few servers are known to Java Api Download block moving files in Java Api Download parallel segments, on the principle that server capacity should be shared equally by all users.) Multi-source Java Api Download is the name given to files that are Java Api Download downloaded in parallel.
There are several things Download Saafir The Hitlist that some web browsers are not very Java Api Download good at. That's 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 Java Api Download poor connections.
Downloading several Java Api Download files from a site Java Api Download automatically according to simple Java Api Download rules (file types, updated files, Java Api Download etc. - Java Api Download see also Offline Browser).
Automatic recursive downloads (mirroring).
Scheduled downloads (including, automatic Java Api Download hang-up and shutdown).
Searching for mirror Java Api Download 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 Java Api Download 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 Java Api Download these files for later download. Java Api Download For broadband users, download Java Api Download managers can help download very large files by resuming broken downloads, by limiting the bandwidth Java Api Download used, so that other internet activities are not affected (slowed) Java Api Download and the server is not overloaded, or by automatically navigating a site and downloading pre-specified content (photo galleries, MP3 Java Api Download collections, etc.) Java Api Download this can also include Java Api Download automatically downloading whole sites and regularly updating them (see Mirroring).
Many download managers support Metalink, an XML file listing mirrors, Java Api Download checksums, Java Api Download and other information useful for downloading.
See Java Api Download below for some examples of Java Api Download commonly used download managers. Some downloaders are optimized Java Api Download for a certain function. For example, Offline Explorer is designed to download entire websites.
Download managers, Java Api Download such as Go!Zilla, were among the first adware Java Api Download applications Java Api Download displaying a banner ad in the user interface.
Related to download managers are Java Api Download two other breeds of Internet programs, file-sharing peer-to-peer applications (Kazaa, eMule, BitTorrent, Java Api Download Gnutella) and stream Java Api Download recorders (such as Java Api Download StreamBox VCR).
While download Free Download Phone managers are designed to give users greater control over downloads, some downloaders are Cheat Counter Download Source Strike created to give that control to Java Api Download content distributors instead. Some software companies, for example Adobe [1], provide Java Api Download such downloaders for downloading software on their own site. Presumably this increases reliability Java Api Download and reduces tech support costs to them. A possible reason is increasing the control Java Api Download over Bzip2 Decompressor Download redistribution of their software (even when the software is Java Api Download freeware).In computer technology and Java Api Download telecommunication, on-line and off-line are defined by Federal Standard 1037C. They are states or conditions of a "device or Java Api Download equipment" or of "a functional unit". To be considered on-line, a device must be at least one of:
"Under the direct control Java Api Download of another Java Api Download device"
"Under the Java Api Download direct control of the system with which it Java Api Download is associated"
"Available for immediate use on demand by the system without human Java Api Download intervention"
"Connected to a system, Java Api Download and is Java Api Download in Java Api Download operation"
"Functional and ready for service"
while Java Api Download a device that is off-line is not (e.g. it has "its main power source Java Api Download disconnected or turned Java Api Download off", and is "off-power").
One example of a common Java Api Download use of these concepts is a Mail User Agent Java Api Download that can be instructed to be in either "on-line" or "off-line" states. One such MUA is Microsoft Outlook. Java Api Download When it is "on-line" it will attempt to connect to mail servers (to Java Api Download check for new mail at regular intervals, for example), and when it is "off-line" it Dvd X Download Free will not Java Api Download attempt to make any such connections. The "on-line" or "off-line" state of the MUA Java Api Download does not necessarily Staroffice Download reflect the connection status between the computer on which it is running and Internet. The user may have the computer Java Api Download Internet Download Accelerator Key Gen itself on-line, connected to Internet via a cable modem or an ADSL connection, Java Api Download 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 Java Api Download employ a dial-up connection on demand (whenever an application such as Outlook Java Api Download attempts to make connection to Java Api Download a Java Api Download server), but the connection may be an expensive telephone call from the particular location in which the computer currently happens to be (such Java Api Download as a hotel room) and the user may not wish Outlook to trigger making that call every 5 or Naruto Shippuden Music Download 10 minutes to check for mail.[1]
Another example of Java Api Download the use of these concepts is in the world of digital audio technology. A tape recorder, digital editor, or other device that Java Api Download is "on-line" is one Java Api Download whose clock is under the control of the clock of a "synchronization master" device. When the sync master commences playback, Java Api Download the "on-line" device automatically synchronizes itself to the master and commences Java Api Download playing from the same point in the recording. Whereas a Java Api Download device that Java Api Download is "off-line" uses 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 output Java Api Download of one single device, to take it off-line, because Java Api Download if the device is played back on-line all synchronized devices have to locate Java Api Download the playback point and wait for each other to be in synchronization.[2] (For further related discussion, see MIDI timecode, word sync, and recording system synchronization.)
A third example of a common use of these concepts is a web browser that Java Api Download can be instructed to be Java Api Download in either "on-line" or "off-line" states. The Download Tabledancers Best Time browser only attempts to Java Api Download fetch pages from servers whilst in the "on-line" state. In the "off-line" state, users Java Api Download can perform Java Api Download offline browsing, where pages can be browsed using local copies of those pages Java Api Download 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 Java Api Download expensive or impossible. The pages are either downloaded implicitly into the web Java Api Download browser's own cache, as a result Java Api Download of prior on-line browsing by the user, or Java Api Download explicitly by Java Api Download the browser being configured to keep Java Api Download local copies of certain web pages, which it keeps updated when the browser is in the on-line state, either by Download Counter Strike Source Maps checking that the local copies are Java Api Download up-to-date at regular intervals or by checking that the local copies are up-to-date whenever Java Api Download the browser is switched to the on-line state. Java Api Download 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 to local Java Api Download copies Java Api Download both the marked page and, optionally, all of the pages that it links to. In Internet Explorer version 6, the level of Java Api Download direct and Java Api Download indirect links, the maximum amount of local disc space allowed to be consumed, Java Api Download and the schedule on which local copies are Java Api Download checked to Java Api Download 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 a feature in the most recent version of Internet Explorer 7, which only now supports single web page saving, but not browsing or Java Api Download storing an entire site offline.[citation needed]
Similarly, off-line storage is computer storage that is not "available for Java Api Download immediate use on demand by the system without human intervention", i.e it Java Api Download is storage Java Api Download that Java Api Download is off-line.
The ideas of "on-line" and "off-line" have been generalized from computing and telecommunication into the field Java Api Download of human interpersonal relationships. The distinction between what is considered "on-line" Java Api Download and what is Java Api Download considered "off-line" has become a Java Api Download 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), Java Api Download respectively. "On-line" is virtuality, and "off-line" is reality Java Api Download (e.g. real life or meatspace). Java Api Download Slater states that this Download Dragon Speak Trial distinction Java Api Download is "obviously far too simple". To support his argument that the distinctions in relationships are more Java Api Download complex than Java Api Download a simple "on-line"/"off-line" dichotomy, Java Api Download he observes that some Java Api Download 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 be regarded as an "on-line" experience in some circumstances, and that the blurring of the distinctions between Java Api Download the uses of various technologies (such as PDA and mobile telephone, television and Internet, and telephone and Java Api Download voice-over-IP) has made it "impossible Java Api Download to Java Api Download use the term 'on-line' meaningfully Java Api Download in the sense that was employed by the first generation of Java Api Download Internet research".[7]
Slater asserts that there are legal and regulatory pressures to reduce the distinction between "on-line" and "off-line", with Download Free Computer Books a "general Java Api 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. Java Api Download He conjectures that greater legal status may be assigned to on-line relationships (pointing Java Api Download out that contractual relationships, such as business transactions, on-line are already seen as just as "real" as their off-line counterparts), although he states it to Java Api Download be hard to Motorola V265 Usb Software Download imagine courts awarding Download Ghex palimony to people who have had a purely on-line sexual relationship. He also Java Api Download 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 Java Api Download reality is sometimes inverted, with "on-line" concepts Java Api Download being used to define and to explain "off-line" activities, rather than (as per the conventions of the desktop metaphor with its Java Api Download desktops, trash cans, folders, and so forth) the other way around. Several cartoons Java Api Download by The New Yorker have satirized this. Download Vb6 Code One includes 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 Java Api Download actual size!", where shoppers may "Take it home as soon as you pay for it!", and where Java Api Download "Merchandise may be handled prior Java Api Download to purchase!". |
