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Which one of the following devices uses a laser beam to read and interpret bar code?
- a)Voice input system
- b)Barcode reader
- c)Touch screen
- d)Joystick
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Which one of the following devices uses a laser beam to read and inter...
The device that uses a laser beam to read and interpret barcodes is the Barcode reader.
Explanation:
The Barcode reader is a device that uses a laser beam to read and interpret barcodes. It is commonly used in retail and logistics industries to quickly and accurately scan barcodes on products and packages.
Here is a detailed explanation of why the other options are incorrect:
- Voice input system: A voice input system is a technology that allows users to input data or commands using their voice. It does not use a laser beam to read barcodes.
- Touch screen: A touch screen is an input device that allows users to interact with a computer or electronic device by touching the screen. It does not use a laser beam to read barcodes.
- Joystick: A joystick is an input device used for controlling video games or other computer systems. It does not use a laser beam to read barcodes.
In conclusion, the correct answer is Barcode reader, as it uses a laser beam to read and interpret barcodes.
Explanation:
The Barcode reader is a device that uses a laser beam to read and interpret barcodes. It is commonly used in retail and logistics industries to quickly and accurately scan barcodes on products and packages.
Here is a detailed explanation of why the other options are incorrect:
- Voice input system: A voice input system is a technology that allows users to input data or commands using their voice. It does not use a laser beam to read barcodes.
- Touch screen: A touch screen is an input device that allows users to interact with a computer or electronic device by touching the screen. It does not use a laser beam to read barcodes.
- Joystick: A joystick is an input device used for controlling video games or other computer systems. It does not use a laser beam to read barcodes.
In conclusion, the correct answer is Barcode reader, as it uses a laser beam to read and interpret barcodes.
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Which one of the following devices uses a laser beam to read and interpret bar code?a)Voice input systemb)Barcode readerc)Touch screend)JoystickCorrect answer is option 'B'. Can you explain this answer? for Class 8 2025 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about Which one of the following devices uses a laser beam to read and interpret bar code?a)Voice input systemb)Barcode readerc)Touch screend)JoystickCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 8 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which one of the following devices uses a laser beam to read and interpret bar code?a)Voice input systemb)Barcode readerc)Touch screend)JoystickCorrect answer is option 'B'. Can you explain this answer?.
Which one of the following devices uses a laser beam to read and interpret bar code?a)Voice input systemb)Barcode readerc)Touch screend)JoystickCorrect answer is option 'B'. Can you explain this answer? for Class 8 2025 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about Which one of the following devices uses a laser beam to read and interpret bar code?a)Voice input systemb)Barcode readerc)Touch screend)JoystickCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 8 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which one of the following devices uses a laser beam to read and interpret bar code?a)Voice input systemb)Barcode readerc)Touch screend)JoystickCorrect answer is option 'B'. Can you explain this answer?.
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