13 Questions
What device is responsible for converting light to electricity in digital cameras?
Charge Coupled Device (CCD)
Which technology is used to convert hardcopy paper documents into digital form?
OCR (Optical Character Recognition)
What is the purpose of ADC in the digital representation process?
Converting analog signals to digital signals
In hospitals, what technology is commonly used to capture 3D objects for further processing?
Computer Tomographic
What is the main function of a 3D printer after receiving data from x,y,z coordinate scanners?
Creating a 3D image of a solid object
How are 0-9 numbers represented in barcode scanners?
By unique lines with different codes for each digit
What type of light is used to read barcodes?
Red light
What happens in a barcode scanner when it encounters a dark area in the barcode?
The light is absorbed and no reflection occurs
What is the main advantage for supermarkets in using barcodes?
Automatic stock control
How are QR codes different from traditional barcodes?
They can store internet addresses
What makes QR codes advantageous for advertising products?
They allow framing of advertisements inside the code
What is a disadvantage of using keyboards as input devices?
Frequent use can lead to injuries like RSI
How does a microphone convert sound waves into electrical current?
"By passing sound waves through a copper wire and magnetic field"
This quiz covers the operation and components of digital cameras and 3D scanners. Topics include the role of charge-coupled devices, image conversion, x,y,z coordinate capture in scanners, and applications in various fields like hospitals and 3D printing.
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