Q47
When were bar code scanners invented?
A.
1940s
B.
1950s
C.
1970s
AnswerD.
1960s
Answer: Option C
Solution
Answer: Option C
Solution:
The first scanning of the now-ubiquitous Universal Product Code (UPC) barcode was on a pack of Wrigley Company chewing gum in June 1974 at a Marsh supermarket in Troy, Ohio, using scanner produced by Photographic Sciences Corporation. QR codes, a specific type of 2D barcode, have recently become very popular.