A coordinatograph is an instrument that mechanically plots X and Y coordinates onto a surface, such as in compiling maps or in plotting control points such as in electronic circuit design.
One historic application of a coordinatograph was a machine that precisely placed and cut rubylith to create photomasks for early integrated circuits, including some of the earliest generations of the modern microprocessors used in personal computers. The coordinatograph produced layout would then be photographically reduced 100:1 to create the production photomask.
See also
- Cartography
- Cartometry
- Photolithography
- Etching (microfabrication)
- Design for manufacturability
- Semiconductor device fabrication
References
- Maling, D. H. (2013). Measurements from Maps: Principles and Methods of Cartometry. Elsevier. pp. 160–161. ISBN 978-0-08-030290-4. Retrieved 7 January 2015.
- Volk, Andrew; Stoll, Peter; Metrovich, Paul (2001). Chao, Lin (ed.). "Recollections of Early Chip Development at Intel" (PDF). Intel Technology Journal (Q1, 2001): 10–11. Retrieved 7 January 2015.
The first chips at Intel used a machine called a "Coordinatograph" to guide cutting of the .
- Bergman, Dieter (2007). Martel, Michael L. (ed.). From Vacuum Tubes to Nanotubes: An Amazing Half Century: The Emergence of Electronic Circuit Technology 1957-2007 (PDF). IPC. p. 113. Archived from the original (PDF) on 2015-01-07.
(Semiconductor die patterns were usually produced at 100:1 using a scribe-coat coordinatograph where the coating was peeled away to leave the represented IC Pattern).
External links
- https://www.cnet.com/news/intels-accidental-revolution states rubylith was used on the Intel 4004.
- http://encyclopedia2.thefreedictionary.com/Coordinatograph defines a coordinatograph in general terms.
- IEEE describes a modern version of the coordinatograph.
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