COMPUTER PERIPHERALS
PRINTERS AND SCANNERS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Change Copled Device
|
|
|
Charge Coupled Device
|
|
|
Charge Copy Device
|
|
|
Computer Connectivity Device
|
Detailed explanation-1: -Most scanners use CCD (charge-coupled device) light-sensitive image sensors, though the newer CMOS (complementary metal oxide semiconductor) technology is making some inroads in lower-cost and lower-quality mobile applications.
Detailed explanation-2: -In the past, CCDs could deliver much better quality images than other types of sensors, including those based on CMOS technology. As a result, they were used in a wide range of devices, including scanners, bar code readers, microscopes, medical equipment and astronomical telescopes.
Detailed explanation-3: -CCD barcode scanners (charge coupled device) technology is also known as linear image barcode scanners/readers. With this technology, tiny light sensors are arranged, single file, within the CCD scanner. These lights measure the ambient light that the barcode emits (the dark versus the light in the code).
Detailed explanation-4: -A CCD camera is a light-sensitive, silicon, solid-state device. This imaging technology is based on collecting photons on the surface of a silicon grid containing many collection wells or pixels (for example, a 512 × 512 − p i x e l grid).