The invention of electronically controlled machines to display text and to output typographic matter has been a key factor in the development of digital type storage. Such machines are divided into three groups according to their application:
Visual display devices (VDT, graphic VDT, TV)
Typesetting machines (CRT, laser, microfilm, matrix)
Numerically Controlled (NC) machines (drawing, cutting, routing, engraving).
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© Springer-Verlag Berlin Heidelberg 1994