Optical reader

Category:Articles with short descriptionCategory:Short description matches Wikidata

Category:Use British English from February 2024 Category:Use dmy dates from February 2024

Category:Articles needing additional references from February 2024Category:All articles needing additional references

An optical reader is a device that observes visual information and translates it into digital information,[1] as found within most image and barcode and matrix-code scanners.

An example of optical readers are marksense systems for elections where voters mark their choice by filling a rectangle, circle, or oval, or by completing an arrow. After the voting a tabulating device reads the votes using "dark mark logic", whereby the computer selects the darkest mark within a given set as the intended choice or vote.

See also

References

  1. Weik, Martin H. (2000). "Optical Reader". Computer Science and Communications Dictionary. Boston: Springer. p. 1183. doi:10.1007/1-4020-0613-6_13126. ISBN 978-1-4020-0613-5. Retrieved 10 February 2023.
Category:Optical devices
Category:All articles needing additional references Category:All stub articles Category:Articles needing additional references from February 2024 Category:Articles with short description Category:Optical devices Category:Optics stubs Category:Short description matches Wikidata Category:Use British English from February 2024 Category:Use dmy dates from February 2024