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  2. MSD Super Disk - Wikipedia

    en.wikipedia.org/wiki/MSD_Super_Disk

    The MSD Super Disk were a series of 5¼-inch floppy disk drives compatible to some degree with the Commodore 1541 disk drive. produced by Micro Systems Development (Dallas, Texas; later MSD Systems) for use with Commodore 8-bit home computers. Two different versions of the MSD Super Disk were available: the single-drive model, SD-1; and the ...

  3. History of hard disk drives - Wikipedia

    en.wikipedia.org/wiki/History_of_hard_disk_drives

    The commercial usage of hard disk drives (HDD) began in 1957, with the shipment of a production IBM 305 RAMAC system including IBM Model 350 disk storage. [ 4] US Patent 3,503,060 issued March 24, 1970, and arising from the IBM RAMAC program is generally considered to be the fundamental patent for disk drives. [ 5]

  4. Superhard material - Wikipedia

    en.wikipedia.org/wiki/Superhard_material

    Diamond is the hardest known material to date, with a Vickers hardness in the range of 70–150 GPa. Diamond demonstrates both high thermal conductivity and electrically insulating properties, and much attention has been put into finding practical applications of this material. However, diamond has several limitations for mass industrial ...

  5. The Merck Manuals - Wikipedia

    en.wikipedia.org/wiki/The_Merck_Manuals

    The Merck Manual of Patient Symptoms was a small printed reference summary of symptoms intended for medical students, physician assistants, and the like. The Merck Veterinary Manual, introduced in 1955, covers animal health care. The Merck Manual for Pet Health is a consumer, or pet owner, edition. The Merck Manual of Geriatrics was introduced ...

  6. Hard disk drive - Wikipedia

    en.wikipedia.org/wiki/Hard_disk_drive

    A hard disk drive ( HDD ), hard disk, hard drive, or fixed disk[ a] is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material.

  7. Material properties of diamond - Wikipedia

    en.wikipedia.org/wiki/Material_properties_of_diamond

    Material properties of diamond. Burns above 700 °C in air. Diamond is the allotrope of carbon in which the carbon atoms are arranged in the specific type of cubic lattice called diamond cubic. It is a crystal that is transparent to opaque and which is generally isotropic (no or very weak birefringence ).

  8. Her claim was not about spelling it backwards, but rather saying it backwards; in other words, if one breaks the word into several sections or prosodic feet ("super-cali-fragi-listic-expi-ali-docious") and recites them in reverse sequence, and also modifies "super" to "rupus", it comes close to what Poppins said in the film. However, when the ...

  9. Download, install, or uninstall AOL Desktop Gold - AOL Help

    help.aol.com/articles/aol-desktop-downloading...

    Call paid premium support at 1-800-358-4860 to get live expert help from AOL Customer Care. Learn how to download and install or uninstall the Desktop Gold software and if your computer meets the system requirements.