{"id":523,"date":"1984-01-15T14:24:36","date_gmt":"1984-01-15T14:24:36","guid":{"rendered":"http:\/\/localhost\/museum\/?page_id=523"},"modified":"2021-04-19T07:07:18","modified_gmt":"2021-04-19T07:07:18","slug":"nec-floppy-disk","status":"publish","type":"page","link":"https:\/\/emuseum.ucsc.cmb.ac.lk\/?page_id=523","title":{"rendered":"NEC Floppy Disk"},"content":{"rendered":"<p>[vc_row][vc_column width=&#8221;1\/2&#8243;][vc_single_image image=&#8221;512&#8243; img_size=&#8221;full&#8221; onclick=&#8221;link_image&#8221; el_class=&#8221;museum_item&#8221;][\/vc_column][vc_column width=&#8221;1\/2&#8243;][vc_column_text css=&#8221;.vc_custom_1610720837427{border-top-width: 0px !important;border-right-width: 0px !important;border-bottom-width: 0px !important;border-left-width: 0px !important;padding-top: 5px !important;padding-right: 5px !important;padding-bottom: 5px !important;padding-left: 5px !important;background-color: #000000 !important;}&#8221;]<\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">Model: Floppy Disk 2DD (Double Density)<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Model Number: EF- 9021P<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Manufacturer: Nippon Electric Company (NEC)<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Storage Capacity: 256KB<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Released in: Japan in 1971<\/span><\/li>\n<\/ul>\n<h3><strong>Specifications <\/strong><\/h3>\n<ul>\n<li><span style=\"font-weight: 400;\">Size : 8-inch (203 mm)\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Density: DSDD (Double-Sided Double Density)<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Disk coating:\u00a0 Iron Oxide<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Data Encoding type: FM (Frequency Modulation)<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Data Read\/Write Direction: Longitudinal \/ Horizontal<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Released for: NEC PC-9800 VM personal computer <\/span><\/li>\n<\/ul>\n<p>[\/vc_column_text][vc_empty_space][\/vc_column][\/vc_row][vc_row][vc_column][vc_custom_heading text=&#8221;Description&#8221; font_container=&#8221;tag:h3|text_align:left|color:%23ffffff&#8221; google_fonts=&#8221;font_family:Montserrat%3Aregular%2C700|font_style:700%20bold%20regular%3A700%3Anormal&#8221;][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]<\/p>\n<p style=\"text-align: justify;\">Floppy disk is a type of disk storage composed of a thin and flexible disk of a magnetic storage medium in a square or nearly square plastic enclosure lined with a fabric that removes dust particles from the spinning disk. Floppy disks are read from and written to by a floppy disk drive (FDD). Floppy disks were an almost universal data format from the 1970s into the 1990s, used for primary data storage as well as for backup and data transfers between computers. The first floppy disks, invented and made by IBM in the late 1960s as a replacement for punch cards, had a disk diameter of 8-inch (203 mm). Subsequently 5 1\u20444-inch (133 mm) and then \u200b3 1\u20442 inch (90 mm) became a ubiquitous form of data storage. These were smaller versions of the 8-inch disks, with similar characteristics. In 1971, NEC introduced 8-inch double density floppy disk having a double sided formatted capacity 256KB. It was released for NEC PC-9800 VM personal computer that has two NEC (8-inch 2DD) floppy drives. Double density (DD) 8-inch disks use an iron oxide coating. It used Frequency Modulation (FM) encoding system for recording digital data on magnetic media. Floppy disks remained a popular medium for nearly 40 years, but their use was declining by the mid- to late 1990s.<\/p>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_separator color=&#8221;white&#8221;][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column width=&#8221;1\/2&#8243;][vc_single_image image=&#8221;512&#8243; img_size=&#8221;full&#8221; onclick=&#8221;link_image&#8221; el_class=&#8221;museum_item&#8221;][\/vc_column][vc_column width=&#8221;1\/2&#8243;][vc_column_text css=&#8221;.vc_custom_1610720837427{border-top-width: 0px !important;border-right-width: 0px !important;border-bottom-width: 0px !important;border-left-width: 0px !important;padding-top: 5px !important;padding-right: 5px !important;padding-bottom: 5px !important;padding-left: 5px !important;background-color: #000000 !important;}&#8221;] Model: Floppy Disk 2DD (Double Density) Model Number: EF- 9021P Manufacturer: Nippon Electric Company (NEC) Storage Capacity: 256KB Released in: Japan in 1971 Specifications Size : 8-inch (203 mm)\u00a0 &hellip; <a href=\"https:\/\/emuseum.ucsc.cmb.ac.lk\/?page_id=523\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;NEC Floppy Disk&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":512,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"categories":[220],"tags":[],"_links":{"self":[{"href":"https:\/\/emuseum.ucsc.cmb.ac.lk\/index.php?rest_route=\/wp\/v2\/pages\/523"}],"collection":[{"href":"https:\/\/emuseum.ucsc.cmb.ac.lk\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/emuseum.ucsc.cmb.ac.lk\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/emuseum.ucsc.cmb.ac.lk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/emuseum.ucsc.cmb.ac.lk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=523"}],"version-history":[{"count":5,"href":"https:\/\/emuseum.ucsc.cmb.ac.lk\/index.php?rest_route=\/wp\/v2\/pages\/523\/revisions"}],"predecessor-version":[{"id":2170,"href":"https:\/\/emuseum.ucsc.cmb.ac.lk\/index.php?rest_route=\/wp\/v2\/pages\/523\/revisions\/2170"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/emuseum.ucsc.cmb.ac.lk\/index.php?rest_route=\/wp\/v2\/media\/512"}],"wp:attachment":[{"href":"https:\/\/emuseum.ucsc.cmb.ac.lk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/emuseum.ucsc.cmb.ac.lk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=523"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/emuseum.ucsc.cmb.ac.lk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}