Scanners Flashcards Preview

Principles Of Information Technology > Scanners > Flashcards

Flashcards in Scanners Deck (12)
Loading flashcards...
1

a device used to analyze an image and process it

scanner

2

-used for scanning most documents, photos, and flat objects from a PC or laptop
-works like a copy machine
-documents are faced down

flatbed scanner

3

-more portable
-used to scan documents and photos
-paper moves through the scanner

sheet-fed scanner

4

-user moves scanner across the document
-image quality is usually lower

handheld scanner

5

-used by publishing industry
-document is placed on a glass cylinder
-creates very high quality scans

drum scanner

6

What are most scanners connected by?

USB- Universal Serial Bus

7

What is TWAIN?

-software used by the computer to communicate with the scanner
-controls the scanner and serves as the connection
-an old form of the word two
-origin of the term is from Kipling's “The Ballad of East and West” ("...and never the twain shall meet...")
-allows 3rd party software apps to access the scanner
-refers to the computer and scanning and the difficulty in connecting

8

-simple, old, low quality, limited editing
-used to store bitmap digital images

.bmp

9

-photo or art
-(losless) when compressed they do not lose any of the data that renders the image allowing the image to maintain its resolution

.tif- Tagged Image File

10

-(lossy) when compresses they lose some data that renders the image, resulting in a lower resolution image
-most common

.jpg

11

designed to replace GIF format

.png- Portable Network Graphics

12

-used for scanning documents (Adobe)
-fixes documents, so you can't make changes
-Adobe Acrobat Reader

.pdf- Portable Document Format