General Knowledge - Inventions - Discussion

Discussion :: Inventions - Section 1 (Q.No.61)

61. 

When were bar code scanners invented?

[A]. 1940s
[B]. 1950s
[C]. 1970s
[D]. 1960s

Answer: Option C

Explanation:

The scanner reads the bar code label on something at a supermarket, and translates it into a number which the computer reads.

Patil said: (Apr 7, 2016)  
Who invented the bar code scanners?

Khushi Bansal said: (Jul 13, 2016)  
Tell me the inventor of bar code scanners.

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