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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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -Barcode readers capture and translate barcodes into numbers and/or letters for translation by computer. Barcode scanners can be connected to a computer through a serial port, keyboard port or interface device called a wedge.
Detailed explanation-2: -Infrared rays are electromagnetic radiation with wavelengths longer than those of visible light. They are commonly used in barcode scanners as they are easy and convenient to use. Following is some of the features: Easier readability by illumination.
Detailed explanation-3: -Decide which format of barcode is best to use. For inventory management, a code 39 or 128 with a simple alphanumeric format is usually sufficient. If you’re barcoding very small items, you’ll notice the Code 128 is more compact and so possibly better suited for the job.