The familiar UPC bar code uses more than the minimum number of bits to code symbols
A) so the code will fill up the required amount of space on the package
B) so additional information can be coded
C) to allow for expansion in the future
D) so the reader can tell whether or not the product is upside down

Question

Quizplus · Accepted Answer

The UPC bar code uses extra bits to include start, middle, and end patterns that help the scanner determine the orientation of the code, ensuring it can be read correctly whether the product is upside down or not.

The Familiar UPC Bar Code Uses More Than the Minimum