Barcode is a code based on the representation of a set of parallel lines of different thickness and spacing that together contain a certain information, that is, the bars and spaces of the code represent small strings of characters. As of January 2017, the barcode is massively implemented globally. The first barcode patent was registered in October 1952, by the American inventors, Norman Joseph Woodland (1921-2012), Jordin Johanson, and Bernard Silver (1924-1963) in the United States. The implementation was possible thanks to the work of engineers, Raymond Alexander and Frank Stietz, The result of their work was a method to identify rail cars using an automatic system. However, it was not until 1966 when the bar code began to be used commercially and did not have a commercial success until 1980.1.The patent of the first barcode was registere in ....
A. 1921 B. 1924 C.1952. D. 1963 E. 1966


2.The barcode has been ....globally since 2017 A. applied B. run D. implement E. performed C. use​