Information system used in Wal-Mart(part2)

   Point-of-sale system (POS ):

A computerized system that identifies each item sold, finds its price in a computerized database, creates an accurate sales receipt for the customer, and stores this item-by-item sales information for use in analyzing sales and reordering inventory.

Over one 5 year period, Wal-Mart invested over $600 million in information systems.

Telecommunications:

Wal-Mart use telecommunications to link directly from its stores to its central computer system and from that system to its supplier's computers.

Bar Code Scanning:

The idea of bar code scanning required that industry develop a universal product code (UPC) system, a standard method for identifying products with numbers and coding those numbers as the type of bar code shown in the photo.