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WorksheetsScanners and Touch Screen Technologies (Pages 96-101)
Total questions: 28
Worksheet time: 14mins
What type of scanner is primarily used for inputting hard copy documents?
2D Scanner
3D Scanner
Optical Scanner
Thermal Scanner
What device converts light into an electric current in a 2D scanner?
Lens
Scan Head
Charge Coupled Device (CCD)
Xenon Lamp
What technology allows scanned text to be converted into a text file format?
Image Processing
Digital Imaging
Optical Character Recognition (OCR)
Data Compression
What type of image file is created when a photograph is scanned?
GIF
JPEG
PNG
BMP
What coordinates do 3D scanners use to scan solid objects?
Polar Coordinates
X, Y, and Z
X and Y
X, Y, Z, and T
What is one application of 2D scanners at airports?
Reading passports
Scanning luggage
Reading boarding passes
Identifying baggage
What is the primary function of face recognition software at airports?
To check flight status
To read barcodes
To compare facial images
To scan luggage
What technology is used in computed tomographic (CT) scanners?
Magnetic Resonance Imaging
Infrared Sensors
X-rays
Ultrasound
What type of touch screen technology is most common currently?
Capacitive
Optical
Infrared
Resistive
What is a key advantage of projective capacitive touch screens?
Low cost
Poor visibility
High power consumption
Multi-touch capability
What is a disadvantage of surface capacitive touch screens?
Sensitive to electromagnetic radiation
Good visibility in sunlight
Works with gloves
High durability
What do infrared touch screens use to detect touch?
Electric current
Infrared radiation
Magnetic fields
Ultrasound waves
What is a disadvantage of resistive touch screens?
Good resistance to dust
Poor visibility in strong sunlight
High touch sensitivity
Supports multi-touch
What is the main function of a charge coupled device (CCD) in a scanner?
To store the scanned image
To illuminate the document
To focus the image
To convert light into an electric current
What type of image is produced by a 3D scanner?
Two-dimensional
Three-dimensional
Vector
Flat
What is the primary use of OCR technology in scanners?
To enhance image quality
To create 3D models
To convert scanned text into editable format
To compress image files
What is a common use of 3D scanning technology?
Scanning barcodes
Creating 2D images
Computer Aided Design (CAD)
Reading text documents
What is the main purpose of a microcontroller in touch screens?
To calculate touch coordinates
To power the screen
To store data
To display images
What is a disadvantage of infrared touch screens?
Low durability
Requires a stylus
Sensitive to water or moisture
Poor visibility
What is the primary advantage of capacitive touch screens over resistive touch screens?
Higher durability
Better touch sensitivity
Requires a stylus
Lower cost
What type of technology is commonly used in handheld barcode scanners?
Optical
Infrared
Laser
Ultrasound
What is the main purpose of a flatbed scanner?
To enhance image resolution
To digitize flat documents
To scan 3D objects
To compress scanned files
What is a common limitation of optical touch screens?
Limited touch sensitivity
Requires direct sunlight
Low durability
High cost
What technology is primarily used in handheld scanners for document digitization?
Laser
Infrared
Capacitive
Optical
What is a key feature of multi-touch technology in touch screens?
Allows only one finger input
Requires a special stylus
Increases power consumption
Supports gestures like pinch and zoom
What is a primary application of 3D printing technology?
Reading barcodes
Creating 2D images
Scanning documents
Manufacturing prototypes
What type of scanner is typically used for high-resolution image capture?
3D Scanner
Drum Scanner
Flatbed Scanner
Handheld Scanner
What is a common feature of modern digital cameras?
Manual focus
Touchscreen interface
Optical zoom
Film storage
