Main » TERM » C »

contact image sensor

(kon´takt im´ij sen´s&r) (n.) Abbreviated as CIS, a type of optical flatbed scanner that does not use the traditional CCD arrays that rely on a system of mirrors and lenses to project the scanned image onto the arrays. CIS scanners gather light from red, green and blue LEDs(which combine to provide white light) and direct the light at the original document being scanned. The light that is reflected from the original is gathered by a lens and directed at an image sensor array that rests just under the document being scanned. The sensor then records the images according to the intensity of light that hits the sensor.

A CIS scanner is more compact than a CCD scanner and can be used in smaller products than CCD scanning technologies. CIS scanners also require less power than CCD scanners and often can run off battery power or the power from a USB port. CCD scanners, however, provide higher-resolution scans.







LATEST ARTICLES
Facts about Cloud Computing in 2017

The following facts and statistics capture the changing landscape of cloud computing and how service providers and customers are keeping up with... Read More »

Facts about Computer Science: Education and Jobs

The following computer science facts and statistics provide a quick introduction to the changing trends in education and related careers. Read More »

Texting & Chat Abbreviations

From A3 to ZZZ this guide lists 1,500 text message and online chat abbreviations to help you translate and understand today's texting lingo. Read More »

STUDY GUIDES
The Five Generations of Computers

Learn about each of the five generations of computers and major technology developments that have led to the computing devices that we use... Read More »

Computer Architecture Study Guide

Computer architecture provides an introduction to system design basics for most computer science students. Read More »

Network Fundamentals Study Guide

Networking fundamentals teaches the building blocks of modern network design. Learn different types of networks, concepts, architecture and... Read More »