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What does a barcode reader emit to identify bar codes? A. electric pulse B. magnetic pulse sound D. E. light electromagnetic pulse
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2 votes
What does a barcode reader emit to identify bar codes?

A.
electric pulse
B. magnetic pulse
sound
D.
E.
light
electromagnetic pulse

User BlackWasp
by
7.7k points

2 Answers

4 votes

Answer:electromagnetic pulse

Step-by-step explanation:

User MikaAK
by
7.2k points
3 votes

Answer: E light

Step-by-step explanation:

User BALKANGraph
by
7.7k points
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