Science Fair Project Encyclopedia

Scanner

The term scanner has several meanings:

In radio, a scanner is a device for searching for and receiving radio broadcasts.
An image scanner is a general-purpose device which digitises a two-dimensional image.
A barcode scanner reads the data encoded in a barcode.
The term "scanner" is also used in medical imaging.
In computer security, a vulnerability scanner is a computer program to probe a remote system, typically to discover vulnerabilities.
In computer science a scanner denotes a part in the frontend of compilers to do the lexical analysis.
In stage lighting, a scanner is a spotlight which can move its beam with help of a mirror. See also moving light.
In photolithography, a scanner is also called a stepper , and is a device used to sequentially expose a semiconducting silicon wafer to an integrated circuit design pattern projected through a reticle.

See also: scan

10-26-2009 08:16:03
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details