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- Progress_bar abstract "A progress bar is a component in a graphical user interface used to visualize the progression of an extended computer operation, such as a download, file transfer, or installation. Sometimes, the graphic is accompanied by a textual representation of the progress in a percent format.A more recent development is the indeterminate progress bar, which is used in situations where the extent of the task is unknown or the progress of the task cannot be determined in a way that could be expressed as a percentage. This bar uses motion or some other indicator to show that progress is taking place, rather than using the size of the filled portion to show the total amount of progress, making it more like a throbber than a progress bar (see also barber's pole). There are also indeterminate progress indicators, which are not bar shaped.The concept of a progress bar was invented before digital computing. In 1896 Karol Adamiecki developed a chart which he called a harmonogram, which is better known today as a Gantt chart. Adamiecki did not publish his chart until 1931, however, and then only in Polish. The chart thus now bears the name of Henry Gantt (1861–1919), who designed his chart around the years 1910-1915 and popularized it in the west. The concept was later adopted in computing. In 1985, Brad Allan Myers presented a paper on “percent-done progress indicators” at a conference on computer-human interactions. Myers's research involved asking people to run database searches, some with a progress bar and some without. Those who waited whilst watching a progress bar, described an overall more positive experience. Myers concluded that the use of a progress bar reduced anxiety and was more efficient.Typically, progress bars use a linear function, such that the advancement of a progress bar is directly proportional to the amount of work that has been completed. However, varying disk, memory, processor, bandwidth and other factors complicate this estimate. Consequently, progress bars often exhibit non-linear behaviors, such as acceleration, deceleration, and pauses. These behaviors, coupled with humans' non-linear perception of time passing, produces a variable perception of how long progress bars take to complete. However, this also means progress bars can be designed to "feel" faster. Finally, the graphical design of progress bars has also been shown to influence humans' perception of duration.".
- Progress_bar thumbnail Progress_bar_gnome_ubuntu.png?width=300.
- Progress_bar wikiPageID "3487035".
- Progress_bar wikiPageRevisionID "601733233".
- Progress_bar hasPhotoCollection Progress_bar.
- Progress_bar subject Category:GUI_widgets.
- Progress_bar type Doodad103218545.
- Progress_bar type GUIWidgets.
- Progress_bar type Object100002684.
- Progress_bar type PhysicalEntity100001930.
- Progress_bar type Stuff104345288.
- Progress_bar comment "A progress bar is a component in a graphical user interface used to visualize the progression of an extended computer operation, such as a download, file transfer, or installation.".
- Progress_bar label "Barra de progresso".
- Progress_bar label "Barre de progression".
- Progress_bar label "Fortschrittsbalken".
- Progress_bar label "Pasek postępu".
- Progress_bar label "Progress bar".
- Progress_bar label "Progress bar".
- Progress_bar label "Voortgangsbalk".
- Progress_bar label "Индикатор процесса".
- Progress_bar label "プログレスバー".
- Progress_bar sameAs Fortschrittsbalken.
- Progress_bar sameAs Barre_de_progression.
- Progress_bar sameAs Progress_bar.
- Progress_bar sameAs プログレスバー.
- Progress_bar sameAs 진행_표시줄.
- Progress_bar sameAs Voortgangsbalk.
- Progress_bar sameAs Pasek_postępu.
- Progress_bar sameAs Barra_de_progresso.
- Progress_bar sameAs m.09g3bw.
- Progress_bar sameAs Q762308.
- Progress_bar sameAs Q762308.
- Progress_bar sameAs Progress_bar.
- Progress_bar wasDerivedFrom Progress_bar?oldid=601733233.
- Progress_bar depiction Progress_bar_gnome_ubuntu.png.
- Progress_bar isPrimaryTopicOf Progress_bar.
