Hardware devices

Which digit is the checksum on this barcode?

What did Bryce Bayer invent in 1976?

• The Bayer filter
• Bayeux tapestry
• Photoelectric cells
• The Bayer barcode

Can a barcode be read upside down?

• Yes
• No
• Maybe

Which of the following is an advantage of using laser printers over inkjet printers?

• Laser printers produce higher quality colour images

• Laser printers have lower initial costs

• 
  Laser printers are faster and more cost-effective for high-volume printing

• 
  Laser printers use liquid ink, which dries faster

Which part to an RFID system uses an antenna?

• tag
• radio
• cell
• reader

What resolution (dpi) is needed to laser print photo-quality images?

• 30
• 300
• 3,000
• 3

What type of scanners are used to read barcodes?

What does QR stand for?

• Quick release wheel
• Quantitative research
• Quarter back
• Quick response

The human eye is twice as sensitive to which colour?

• red
• green
• blue
• cyan

What is the final stage of laser printing?

• negatively charging the print drum
• creating a bitmap image
• fusing
• passing a sheet of paper under the drum