Scanners Flashcards
1
Q
a device used to analyze an image and process it
A
scanner
2
Q
- used for scanning most documents, photos, and flat objects from a PC or laptop
- works like a copy machine
- documents are faced down
A
flatbed scanner
3
Q
- more portable
- used to scan documents and photos
- paper moves through the scanner
A
sheet-fed scanner
4
Q
- user moves scanner across the document
- image quality is usually lower
A
handheld scanner
5
Q
- used by publishing industry
- document is placed on a glass cylinder
- creates very high quality scans
A
drum scanner
6
Q
What are most scanners connected by?
A
USB- Universal Serial Bus
7
Q
What is TWAIN?
A
- 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
Q
- simple, old, low quality, limited editing
- used to store bitmap digital images
A
.bmp
9
Q
- 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
A
.tif- Tagged Image File
10
Q
- (lossy) when compresses they lose some data that renders the image, resulting in a lower resolution image
- most common
A
.jpg
11
Q
designed to replace GIF format
A
.png- Portable Network Graphics
12
Q
- used for scanning documents (Adobe)
- fixes documents, so you can’t make changes
- Adobe Acrobat Reader
A
.pdf- Portable Document Format
