Keyboard
Mouse
Touch
Scanners
Pen-based
Voice
COMPUTER
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Keyboard
Mouse
Touch
Scanners
Pen-based
Voice
COMPUTER
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Pressure SensitivePressure Sensitive
Touch pads use a pressure-sensitive membranethat has a built-in grid of sensing wires.
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InfraredInfrared
InfraredLEDs
Photodetectors
One way of implementing touch screen technology is by criss-crossing the screen with invisible beams of infrared light. When your finger nears the screen, it interrupts the beams of light and the coordinate is determined.
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Keyboard
Mouse
Touch
Scanners
Pen-based
Voice
COMPUTER
Computer LiteracyComputer LiteracyComputer LiteracyComputer Literacy
Keyboard
Mouse
Touch
Scanners
Pen-based
Voice
COMPUTER
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Mark sense
OCR
MICR
UPC
Graphics/Text
Scanners
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Mark sense
OCR
MICR
UPC
Graphics/Text
Scanners
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Mark sense
OCR
MICR
UPC
Graphics/Text
Scanners
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OCROCR
Most OCR devices store character patterns in ROM. Characters that are read are compared with the character patterns stored in memory and are matched on the basis of the lightness and darkness.
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Font CharacteristicsFont Characteristics Font CharacteristicsFont Characteristics Orientation - Portrait or landscapeOrientation - Portrait or landscape Spacing - Proportional or fixedSpacing - Proportional or fixed Pitch - Characters per horizontal inchPitch - Characters per horizontal inch Point size - Character heightPoint size - Character height Style - Upright or italicStyle - Upright or italic Stroke weight - Medium or boldStroke weight - Medium or bold Typeface - Courier, Times Roman, Helvetica, etc.Typeface - Courier, Times Roman, Helvetica, etc.
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OrientationOrientation
Portrait Landscape
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SpacingSpacing
W I
W I
FIXEDFIXED
PROPORTIONALPROPORTIONAL
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This pitch is 10 characters/inch
This pitch is 12 characters/inch
This pitch is 16.67 characters/inch
Number of Characters per horizontal inchNumber of Characters per horizontal inch
PitchPitch
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Times Roman 2 pt
Times Roman 6 pt
Times Roman 12 pt
Times Roman 24 pt
Times Roman 36 pt
Times Roman 72 pt
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Point Size(1 pt = 1/72 inch)
StyleStyle
UPRIGHT UPRIGHT
ITALIC ITALIC
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Stroke WeightStroke Weight
MEDIUM MEDIUM
BOLD BOLD BOLD
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Type FaceType Face
Times Roman
HelveticaTrafalgarAlgerian
Wide Latin
Script
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Serifs UP!!!Serifs UP!!!
Times RomanTimes RomanThe World’s Most The World’s Most Readable Serif TypefaceReadable Serif Typeface
Aa Bb CcABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqurstuvwxy
HelveticaHelveticaThe InternationalThe InternationalSans Serif TypefaceSans Serif Typeface
Aa Bb CcABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqurstuvwxy
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Mark sense
OCR
MICR
UPC
Graphics/Text
Scanners
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MICRMICR
CheckRoutingSymbol
ABATransitNumber
AccountNumber
ProcessControlNumber
Amount
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Mark sense
OCR
MICR
UPC
Graphics/Text
Scanners
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UPCUPC
Start / End Markers
ManufacturerID# Product
ID#
4 8 0 0 1 2 6 5 6 8
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Mark sense
OCR
MICR
UPC
Graphics/Text
Scanners
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Keyboard
Mouse
Touch
Scanners
Pen-based
Voice
COMPUTER
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Voice RecognitionVoice Recognition
“COPY”
Microphone
1010010101
analog todigital
converter
patternmatching
templatelibrary
1010010100
input tocomputer
system
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1010010101
Voice Voice
ControlControl
SoftwareSoftware
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Voice Voice
DictationDictation
SoftwareSoftware
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Keyboard
Mouse
Touch
Scanners
Pen-based
Voice
COMPUTER
+ “others”+ “others”
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Digital CamerasDigital Cameras
• Magnetic StripesMagnetic Stripes & Smart Cards & Smart Cards
• ATM’sATM’s
• POS’sPOS’s
Light PenLight Pen Digitizer Tablet Digitizer Tablet