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The paper tape that controls casting contains 14 columns of holes that indicate the row of the matrix-case to be used, and 14 columns of holes that indicate the column of the matrix-case to be used. Originally, one row and one column of the matrix-case were indicated by the absence of a hole, and each of the others was indicated by a single hole.
A Multitrack Turing machine is a specific type of multi-tape Turing machine. In a standard n-tape Turing machine, n heads move independently along n tracks. In a n-track Turing machine, one head reads and writes on all tracks simultaneously. A tape position in an n-track Turing Machine contains n symbols from the tape alphabet.
Using letter copying presses, copies could be made up to twenty-four hours after a letter was written, though copies made within a few hours were best. A copying clerk would begin by counting the number of master letters to be written during the next few hours and by preparing the copying book. Suppose the clerk wanted to copy 20 one-page letters.
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Methods of copying handwritten letters Manifold stylographic writer, using early "carbonic paper" Letter copying book process; Mechanical processes Tracing to make accurate hand-drawn copies; Pantograph, manual device for making drawn copies without tracing, can also enlarge or reduce; Printmaking, which includes engraving and etching
The Monotype System took a different direction in hot metal typesetting, with the ability of the Composition Caster to cast loose type using a paper tape-operated automatic casting machine. The paper tape would be first generated on a keyboard and then used to cast the type; the tape could be stored for future casting for subsequent editions.
The name of the machine comes from producing an entire line of metal type at once, hence a line-o'-type. It was a significant improvement over the previous industry standard of letter-by-letter manual typesetting using a composing stick and shallow subdivided trays, called "cases". The Linotype machine operator enters text on a 90-character ...
On this tape are symbols, which the machine can read and write, one at a time, using a tape head. Operation is fully determined by a finite set of elementary instructions such as "in state 42, if the symbol seen is 0, write a 1; if the symbol seen is 1, change into state 17; in state 17, if the symbol seen is 0, write a 1 and change to state 6 ...