Jobs favored the former approach but pitted the Macintosh and iPod teams, led by Scott Forstall and Tony Fadell, respectively, against each other in an internal competition, with Forstall winning by creating iPhone OS. In 2005, when Steve Jobs began planning the iPhone, he had a choice to either "shrink the Mac, which would be an epic feat of engineering, or enlarge the iPod". The current stable version, iOS 17, was released to the public on September 18, 2023. Major versions of iOS are released annually. These mobile apps have collectively been downloaded more than 130 billion times. As of December 2023, Apple's App Store contains more than 3.8 million iOS applications. Since its launch, iOS has been extended to support other Apple devices such as the iPod Touch (September 2007) and the iPad (introduced: January 2010 availability: April 2010). It is the basis for three other operating systems made by Apple: iPadOS, tvOS, and watchOS. It is the world's second-most widely installed mobile operating system, after Android. It is the operating system that powers many of the company's mobile devices, including the iPhone the term also includes the system software for iPads (predating iPadOS, which was introduced in 2019) as well as on the iPod Touch devices (which were discontinued in mid-2022). It was unveiled in January 2007 for the first-generation iPhone, launched in June 2007.Īlthough some parts of iOS are open source under the Apple Public Source License and other licenses, iOS is an Apple proprietary software. IOS (formerly iPhone OS) is a mobile operating system based on macOS and on components of the Mach microkernel and FreeBSD, a Unix-like operating system, developed by Apple Inc. If you want to save this as a template to reuse again, click File > Save as Template, type a file name, and click Save.Proprietary software except for open-source components To add text that will appear as a footer at the bottom of all of the pages in your presentation, on the Slide Master tab, click Slide Size > Page Setup > Header/Footer.Īfter you make your changes, on the Slide Master tab, click Close Master. Under Orientation, click the orientation you want. To set the page orientation for all of the slides in your presentation, on the Slide Master tab, click Slide Size > Page Setup. Note: In the slide thumbnail pane, the slide master is the larger slide image, and the associated layouts are positioned beneath the slide master. Use multiple slide masters in one presentation If you want to save this as a template to reuse again, select File > Save as (or Save a Copy), change the file type to template, enter a file name, and select Save.Ĭhange text alignment, indentation, and spacing. See Insert or change the slide numbers, date, or footer for on-screen slides for more details.Īfter you make your changes, on the Slide Master tab, select Close Master View. To assign specific text to any of the footers, on the ribbon, select Insert > Headers, then select the options you want. To control whether footers (the slide number, date, and footer-text placeholders) are visible on a particular type of slide: In the thumbnail pane, select a slide layout, then on the Slide Master tab, select or clear Footers. Under Orientation, select the orientation you want. To set the page orientation for all of the slides in your presentation, on the Slide Master tab, select Slide Size > Custom Slide Size. To apply a design or theme-based colors, fonts, effects and backgrounds, see Create your own theme in PowerPoint. To remove any of the built-in slide layouts that accompany the default slide master, in the slide thumbnail pane, click each slide layout that you want to delete, and then on the Slide Master tab, click Delete. To create one or more custom layouts or to modify existing layouts, see Apply or change a slide layout. Note: In the slide thumbnail pane, the slide master is the larger slide image at the top, and the associated layouts are positioned below the slide master.
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