India Languages, asked by paulraj363, 5 months ago

The ____ uses long and short light or sound signals.
1. Morse code
2. Bar code
3. QR code

Answers

Answered by bhukyasrikanth92

5

Answer:

A.

Explanation:

morse code . this answer useful to you

Answered by ItzSELFISHGIRL14

13

Answer:

morse code......

Explanation:

hope its help u

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