Input Devices
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Questions and Answers

What is the main function of a microphone?

  • Detecting and tracking movement on a surface
  • Scanning visual representation of data
  • Sending infrared signal to change the channel on a TV
  • Converting sound waves into electrical signals (correct)

    • How does an optical mouse track movement?

  • Scanning visual representation of data using a camera or specialized device
  • Sending infrared signal to change the channel on a TV
  • Using a light-emitting diode (LED) and a sensor to detect and track movement on a surface (correct)
  • Converting sound waves into electrical signals

    • What is the primary function of a QR code scanner?

  • Converting sound waves into electrical signals
  • Detecting and tracking movement on a surface
  • Scanning visual representation of data using a camera or specialized device (correct)
  • Sending infrared signal to change the channel on a TV

    • What is the function of a device that sends an infrared signal to change the channel on a TV?

    <p>Sending infrared signal to change the channel on a TV</p> Signup and view all the answers

    What is the primary function of a light-sensitive pointing input device commonly used to select or modify text or data on a screen?

    <p>Light-sensitive pointing input device commonly used to select or modify text or data on a screen</p> Signup and view all the answers

    Which input device uses a light-emitting diode (LED) and a sensor to detect and track movement on a surface?

    <p>Optical Mouse</p> Signup and view all the answers

    Which input device converts sound waves into electrical signals and is commonly used for voice recording and speech recognition?

    <p>Microphone</p> Signup and view all the answers

    Which input device is used to scan QR codes containing information that can be quickly read by a smartphone or computer?

    <p>QR Code Scanner</p> Signup and view all the answers

    Which input device is commonly used to select or modify text or data on a screen and is light-sensitive?

    <p>Light-Sensitive Pointing Input Device</p> Signup and view all the answers

    Which input device sends an infrared signal to change the channel on a TV?

    <p>Infrared Signal Device</p> Signup and view all the answers

    Which input device is commonly used to convert sound waves into electrical signals for voice recording and speech recognition?

    <p>Microphone</p> Signup and view all the answers

    Which input device uses a light-emitting diode (LED) and a sensor to detect and track movement on a surface?

    <p>Optical Mouse</p> Signup and view all the answers

    Which input device is commonly used to scan QR codes containing information that can be quickly read by a smartphone or computer?

    <p>QR Code Scanner</p> Signup and view all the answers

    Which input device sends an infrared signal to change the channel on a TV?

    <p>Infrared Remote Control</p> Signup and view all the answers

    Which input device is commonly used for voice recording, speech recognition, and audio input in multimedia applications?

    <p>Microphone</p> Signup and view all the answers

    An optical mouse converts sound waves into electrical signals for voice recording and speech recognition.

    <p>False</p> Signup and view all the answers

    A QR code scanner uses a camera or a specialized device to scan QR codes, which contain information that can be quickly read by a smartphone or computer.

    <p>True</p> Signup and view all the answers

    A microphone is commonly used as a pointing device for desktop computers and laptops.

    <p>False</p> Signup and view all the answers

    What is the primary function of a microphone?

    <p>Converting sound waves into electrical signals</p> Signup and view all the answers

    How does an optical mouse detect and track movement?

    <p>It uses a light-emitting diode (LED) and a sensor to detect and track movement on a surface.</p> Signup and view all the answers

    What is the main purpose of a QR code scanner?

    <p>Scanning visual representation of data</p> Signup and view all the answers

    In what way is a microphone commonly used in multimedia applications?

    <p>For voice recording, speech recognition, and audio input</p> Signup and view all the answers

    What are the typical uses of a QR code scanner?

    <p>Advertising, ticketing, and inventory management</p> Signup and view all the answers

    An optical mouse uses a light-emitting diode (LED) and a sensor to detect and track ______ on a surface

    <p>movement</p> Signup and view all the answers

    A handheld device used to record video or take ______

    <p>photos</p> Signup and view all the answers

    A QR code scanner uses a camera or a specialized device to scan QR codes, which contain information that can be quickly read by a smartphone or ______

    <p>computer</p> Signup and view all the answers

    Device used to record and send video across the ______

    <p>internet</p> Signup and view all the answers

    This type of keyboard prevents injuries like ______

    <p>RSI</p> Signup and view all the answers

    Match the following input devices with their primary uses:

    <p>Microphone = Voice recording and speech recognition Optical Mouse = Pointing device for desktop computers and laptops QR Code Scanner = Scanning QR codes for information retrieval Infrared Remote Control = Changing TV channels and controlling electronic devices</p> Signup and view all the answers

    Match the following input devices with their descriptions:

    <p>Microphone = Converts sound waves into electrical signals Optical Mouse = Uses LED and sensor to detect and track movement on a surface QR Code Scanner = Uses camera or specialized device to scan QR codes Infrared Remote Control = Sends infrared signal to change TV channels and control electronic devices</p> Signup and view all the answers

    Match the following input devices with their common uses:

    <p>Microphone = Voice recording and speech recognition Optical Mouse = Pointing device for desktop computers and laptops QR Code Scanner = Scanning QR codes for information retrieval Infrared Remote Control = Changing TV channels and controlling electronic devices</p> Signup and view all the answers

    Match the following input device uses with their corresponding devices:

    <p>Voice recording and speech recognition = Microphone Pointing device for desktop computers and laptops = Optical Mouse Scanning QR codes for information retrieval = QR Code Scanner Changing TV channels and controlling electronic devices = Infrared Remote Control</p> Signup and view all the answers

    Match the following input device descriptions with their corresponding devices:

    <p>Converts sound waves into electrical signals = Microphone Uses LED and sensor to detect and track movement on a surface = Optical Mouse Uses camera or specialized device to scan QR codes = QR Code Scanner Sends infrared signal to change TV channels and control electronic devices = Infrared Remote Control</p> Signup and view all the answers

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