COMPUTER HARDWARE COMPONENTS FUNCTIONS
COMPUTER OUTPUT DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An reading device that uses laser beams to read bar codes by using lights patterns that pass through the bar code lines.
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A reading device that uses a light source to read characters, marks and codes and then converts them into digital data that a computer can process.
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A reading device that uses radio signals to communicate with a tag placed in or attached to an object, an animal or a person.
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A reading device that reads magnetic stripes on the back of cards.
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A reading device that reads text printed with magnetized ink.
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Detailed explanation-1: -Radio Frequency Identification (RFID) refers to a wireless system comprised of two components: tags and readers. The reader is a device that has one or more antennas that emit radio waves and receive signals back from the RFID tag.
Detailed explanation-2: -Which of the following best describes RFID? Radio frequency identification (RFID) systems are technology that uses tiny tags with embedded microchips containing data about an item and its location to transmit short-distance radio signals to special readers that then pass the data on to a computer for processing.
Detailed explanation-3: -Radio Frequency Identification (RFID) is a technology that uses radio waves to passively identify a tagged object. It is used in several commercial and industrial applications, from tracking items along a supply chain to keeping track of items checked out of a library.
Detailed explanation-4: -An RFID reader is a radio frequency device that emits a signal through an antenna. This signal is received by RFID tags that respond to interrogation by the reader. Responses are read by the reader, and through a variety of protocols the reader can communicate with all the RFID tags in its field.