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An alphanumeric grid (also known as atlas grid [1]) is a simple coordinate system on a grid in which each cell is identified by a combination of a letter and a number. [2]An advantage over numeric coordinates such as easting and northing, which use two numbers instead of a number and a letter to refer to a grid cell, is that there can be no confusion over which coordinate refers to which ...
Unicode chart Enclosed Alphanumeric Supplement}} provides a table listing the characters in the Enclosed Alphanumeric Supplement Unicode block. The regional indicator symbols subset can be listed using an optional parameter.
{{Unicode chart Enclosed Alphanumerics}} This template does not take any parameters. The above documentation is transcluded from Template:Unicode chart/block documentation .
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{{Unicode chart Mathematical Alphanumeric Symbols}} This template does not take any parameters. The above documentation is transcluded from Template:Unicode chart/block documentation .
Inspired in the classic alphanumeric grids, a discrete global grid (DGG) is a regular mosaic which covers the entire Earth's surface (the globe). The regularity of the mosaic is defined by the use of cells of same shape in all the grid, or "near the same shape and near same area" in a region of interest, like a country.
Multiple segment alphanumeric displays are nearly as old as the use of electricity. A 1908 textbook [5] describes an alphanumeric display system using incandescent lamps and a mechanical switching arrangement. Each of 21 lamps was connected to a switch operated by a set of slotted bars, installed in a rotating drum.
A projected coordinate system – also called a projected coordinate reference system, planar coordinate system, or grid reference system – is a type of spatial reference system that represents locations on Earth using Cartesian coordinates (x, y) on a planar surface created by a particular map projection. [1]