Podcast
Questions and Answers
QR Codes contain data redundancy.
QR Codes contain data redundancy.
False (B)
QR Codes are difficult to read with the cameras on smartphones.
QR Codes are difficult to read with the cameras on smartphones.
False (B)
Anyone can create a QR Code.
Anyone can create a QR Code.
True (A)
What is the term used to describe malicious codes embedded in QR Codes?
What is the term used to describe malicious codes embedded in QR Codes?
QR Codes can only be used to transmit text messages.
QR Codes can only be used to transmit text messages.
QR Codes are more secure than traditional barcodes.
QR Codes are more secure than traditional barcodes.
What is the purpose of output devices?
What is the purpose of output devices?
Which of the following is an example of an output device?
Which of the following is an example of an output device?
Some output devices can be part of a control system.
Some output devices can be part of a control system.
CRT monitors are still the most widely used type of monitor today.
CRT monitors are still the most widely used type of monitor today.
What does TFT stand for?
What does TFT stand for?
What is the primary reason for the continued use of CRT monitors?
What is the primary reason for the continued use of CRT monitors?
CRT monitors make use of an electron gun firing against a phosphor screen.
CRT monitors make use of an electron gun firing against a phosphor screen.
CRT monitors are the most expensive type of monitor.
CRT monitors are the most expensive type of monitor.
Study Notes
Input and Output Devices
- QR codes are easily read by cameras on smartphones and tablets.
- QR codes can be used to send text messages or images.
- QR codes can be encrypted for better protection.
- QR codes can carry malicious code.
Output Devices
- Output devices show computer processing results to humans.
- Monitors display outputs.
Monitors
- CRT monitors are less common but are sometimes used with CAD software.
- CRT monitors use cathode ray tubes (CRT).
- LCD, or TFT monitors, use thin-film technology.
- LCD monitors are more common than CRT monitors.
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