A Delivery Bar Code Sorter (DBCS) is a mail sorting machine used primarily by the

United States Postal Service The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or simply the Postal Service, is an independent agencies of the United States government, independent agency of the executive branch of the federal governmen ...

. Introduced in 1990, these machines sort letters at a rate of approximately 36,000 pieces per hour, with a 99% accuracy rate. A computer scans the addresses of the

mail The mail or post is a system for physically transporting postcards, letter (message), letters, and parcel (package), parcels. A postal service can be private or public, though many governments place restrictions on private systems. Since the mid ...

, and sorts it to one of up to 286 pockets, setting it up for delivery by the letter carrier.

References

Machines Mail sorting United States Postal Service {{postal-stub