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The small letters at the base of the matrix are founders marks. Punchcutting is a craft used in traditional typography to cut letter punches in steel as the first stage of making metal type. [1] Steel punches in the shape of the letter would be used to stamp matrices into copper, which were locked into a mould shape to cast type.
A keyset or chorded keyboard (also called a chorded keyset, chord keyboard or chording keyboard) is a computer input device that allows the user to enter characters or commands formed by pressing several keys together, like playing a "chord" on a piano. The large number of combinations available from a small number of keys allows text or ...
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The finished letter punch is finally hardened to withstand the rigours of reproduction by striking. One counterpunch and one letterpunch are produced for every letter or glyph making up a complete font. Matrix The letterpunch is used to strike a blank die of soft metal to make a negative letter mould, called a matrix. Casting
A punch is a tool used to indent or create a hole through a hard surface. They usually consist of a hard metal rod with a narrow tip at one end and a broad flat "butt" at the other. When used, the narrower end is pointed against a target surface and the broad end is struck with a hammer or mallet , causing the blunt force of the blow to be ...
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The Teletype Model 33 provided a key labelled RUB OUT to punch this character (after the user backed up the tape using another button), and did not provide a key that produced the Backspace character (BS). Therefore, a number of less-expensive computer systems that used Teletypes used this key (and thus the Delete code) to ignore the previous ...
The fictional metal duranium is referred to in many episodes of Star Trek as extremely hard alloys used in starship hulls and hand-held tools. Dureum Lensman: The fictional synthetic metal dureum has a higher moment of inertia than regular materials. It takes more work to move or stop moving than other objects of the same mass. Dust RWBY