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  2. Magna Doodle - Wikipedia

    en.wikipedia.org/wiki/Magna_Doodle

    A Magna Doodle drawing board. Magna Doodle is a magnetic drawing toy, consisting of a drawing board, a magnetic stylus, and a few magnet shapes.Invented in 1974 by Pilot Corporation, [1] over forty million units have been sold to date worldwide, under several brands, product names and variations, including Tyco and Mattel/Fisher Price.

  3. Whiteboard - Wikipedia

    en.wikipedia.org/wiki/Whiteboard

    A combination between a whiteboard and a cork bulletin board Original early 1960s ad for "Plasti-slate", the first whiteboard/dry erase board invented by Martin Heit. It has been widely reported that Korean War veteran and photographer Martin Heit and Albert Stallion, an employee at Alliance, a leading flat rolled steel sheet supplier should be credited with the invention of the whiteboard in ...

  4. Interactive whiteboard - Wikipedia

    en.wikipedia.org/wiki/Interactive_whiteboard

    An interactive whiteboard (IWB) device can either be a standalone computer or a large, functioning touchpad for computers to use. Interactive whiteboards are widely used in classrooms, boardrooms, and training environments, providing an innovative way to share information, facilitate discussions, and enhance the overall learning or business communication experience.

  5. Freeform (Apple) - Wikipedia

    en.wikipedia.org/wiki/Freeform_(Apple)

    Freeform is a digital whiteboarding application developed by Apple for macOS, iOS, iPadOS, and visionOS devices, first revealed during the 2022 Worldwide Developers Conference, [1] and officially launched on December 13, 2022, alongside iOS 16.2, iPadOS 16.2, and macOS 13.1. [2]

  6. Double-sided disk - Wikipedia

    en.wikipedia.org/wiki/Double-sided_disk

    Initially, double-sided disks had to be removed and flipped over to access data on the other side, but eventually, devices were made that could read both sides without the need to eject the disk. [2] Manufacturers sold both single-sided and double-sided disks with the double-sided disks being typically 50% more expensive than single-sided disks.

  7. Halbach array - Wikipedia

    en.wikipedia.org/wiki/Halbach_array

    This magnetic orientation process replicates that applied by a magnetic recording tape head to the magnetic tape coating during the recording process. The principle was further described by James (Jim) M. Winey of Magnepan in 1970, for the ideal case of continuously rotating magnetization, induced by a one-sided stripe-shaped coil.

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