Scanners
“The Computer as an
Educational Tool:
Productivity and Problem Solving”
©Richard C. Forcier and Don E. Descy
What is a scanner?
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Resembles photocopier
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Computerized image
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Higher resolution = Better quality
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Print or email photos
What is “resolution”?
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Two different numbers (1200 by 2400)
 First number = Width
 Second number = Length
Dots per inch
Smallest number most important
Interpolation
The higher, the better!
Key Features
Optical resolution
 Transparency adapter
 Color depth
 Software
 Scanner type
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Scanner Types
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Flatbed
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Handheld
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Sheet-fed
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Drum scanners
Flatbed Features
Scan negatives
 Scan photos
 Scan word-processed text
 Variety of software
 Sizes of photos
 Printer
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Advantages
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MONEY!
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Show off
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No digital camera
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Create your own photos
Disadvantages
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Quality
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Loss of color
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Higher resolution
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Uses a lot of room