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8-inch floppy disk, inserted in drive, (3½-inch floppy diskette, in front, shown for scale) 3½-inch, high-density floppy diskettes with adhesive labels affixed The first commercial floppy disks, developed in the late 1960s, were 8 inches (203.2 mm) in diameter; [4] [5] they became commercially available in 1971 as a component of IBM products and both drives and disks were then sold ...
Physical map of Earth Political map of Earth. A map is a symbolic depiction of interrelationships, commonly spatial, between things within a space.A map may be annotated with text and graphics.
Drawings from IBM Floppy Disk Drive Patents. IBM's decision in the late 1960s to use semiconductor memory as the writeable control store for future systems and control units created a requirement for an inexpensive and reliable read only device and associated medium to store and ship the control store's microprogram and at system power on to load the microprogram into the control store.
A medieval depiction of the Ecumene (1482, Johannes Schnitzer, engraver), constructed after the coordinates in Ptolemy's Geography and using his second map projection. The translation into Latin and dissemination of Geography in Europe, in the beginning of the 15th century, marked the rebirth of scientific cartography, after more than a millennium of stagnation.
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MS: Ini adalah peta daerah-daerah di negeri Perak di Malaysia pada tahun 2018. Sempadan-sempadan daerah didasarkan peta daripada laman Unique Parcel Identifier, dan kedudukan bandar-bandar dianggarkan berdasarkan peta OpenStreetMap. Sempadan daerah Muallim dan Bagan Datuk (diisytihar 2016) didasarkan peta di laman Wilayah Perak Selatan.
The Defenders of the Homeland (Japanese: 郷土防衛義勇軍, romanized: Kyōdo Bōei Giyūgun; Indonesian: (Tentara Sukarela) Pembela Tanah Air, PETA) was a volunteer army established on 3 October 1943 in the Dutch East Indies (present-day Indonesia) by the occupying Japanese.
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