LITTLE ROCK, Ark. — The Little Rock Zoo is celebrating a milestone Saturday as Melvin the zebra turns 9 years old. Melvin is a Grant's zebra, a subspecies of plains zebra native to the grasslands of ...
This week, the bar code celebrated its 45th birthday. On 26 June 1974, the first product ever – a pack of Wrigley chewing gum – had its bar code scanned. Bar codes are the way of uniquely identifying ...
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