Mail sorting machine used by the US Postal Service
A Delivery Bar Code Sorter (DBCS) is a
mail sorting machine used primarily by the
United States Postal Service. Introduced in 1990, these machines sort
letters at a rate of approximately 36,000 pieces per hour,[1] with a 99% accuracy rate. A computer scans the addresses of the
mail, and sorts it to one of up to 286 pockets, setting it up for delivery by the letter carrier.[2]