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  2. Vietnamese units of measurement - Wikipedia

    en.wikipedia.org/wiki/Vietnamese_units_of...

    Originally, many thước of varying lengths were in use in Vietnam, each used for different purposes. According to Hoàng Phê (1988), [1] the traditional system of units had at least two thước of different lengths before 1890, [2] the thước ta (lit. "our ruler") or thước mộc ("wooden ruler"), equal to 0.425 metres (1 ft 4.7 in), and the thước đo vải ("ruler for measuring ...

  3. Numeric keypad - Wikipedia

    en.wikipedia.org/wiki/Numeric_keypad

    The arrangement of digits on numeric keypads with the 7-8-9 keys two rows above the 1-2-3 keys is derived from calculators and cash registers. It is notably different from the layout of telephone Touch-Tone keypads which have the 1 - 2 - 3 keys on top and 7 - 8 - 9 keys on the third row.

  4. Keycap - Wikipedia

    en.wikipedia.org/wiki/Keycap

    [1] Double shot: The most expensive and durable process: each outer keycap has its legend physically moulded into it, and the legend is then created by injecting a different piece of plastic into the keycap from the inside. This means that there is no chance of the legend ever fading or getting removed, even as the keycap wears down.

  5. Rack unit - Wikipedia

    en.wikipedia.org/wiki/Rack_unit

    Rack with sample component sizes including an A/V half-rack unit. A rack unit (abbreviated U or RU) is a unit of measure defined as 1 + 3 ⁄ 4 inches (44.45 mm). [1] [2] It is most frequently used as a measurement of the overall height of 19-inch and 23-inch rack frames, as well as the height of equipment that mounts in these frames, whereby the height of the frame or equipment is expressed ...

  6. 19-inch rack - Wikipedia

    en.wikipedia.org/wiki/19-inch_rack

    Thus, a 1U rackmount computer is not 1.750 inches (44.5 mm) tall but is 1.719 inches (43.7 mm) tall. If n is number of rack units, the ideal formula for panel height is h = 1.75n − 0.031 for calculating in inches, and h = 44.45n − 0.794 for calculating in millimeters. This gap allows a bit of room above and below an installed piece of ...

  7. Language input keys - Wikipedia

    en.wikipedia.org/wiki/Language_input_keys

    The OADG 109A and older 109 keyboard layouts which are the standard for Microsoft Windows have five dedicated language input keys: [1] halfwidth/fullwidth/kanji (hankaku/zenkaku/kanji 半角 / 全角 / 漢字) at the top left key of the keyboard; alphanumeric (eisū 英数), combined with non-language specific key ⇪ Caps Lock;

  8. HCMC Metro Line 1 - Wikipedia

    en.wikipedia.org/wiki/HCMC_Metro_Line_1

    Line 1, also known as Bến Thành – Suối Tiên Line, is a rapid transit line of the HCMC Metro in Vietnam. [1] It is the city's first metro line and the nation's first underground metro line, connecting District 1 , Bình Thạnh , and Thủ Đức City .

  9. List of cities in Vietnam - Wikipedia

    en.wikipedia.org/wiki/List_of_cities_in_Vietnam

    Centrally controlled cities (thành phố trực thuộc trung ương) or municipalities are cities with significant importance in terms of politics, economy and culture of Vietnam that are under direct control of the Vietnamese Central government.

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