Data processing system

Abstract

This disclosure relates to a system for processing a plurality of random weight commodity packages in a supermarket utilizing a series of labels having nonrepretitive machine readable symbols thereon. The system includes a computer-scale having a data entry unit, a central computer including a memory bank, and a symbol scanner at a checkout station. Commodity-related data including the commodity identification and the price per unit weight are entered into the entry unit, most or all of the data usually being entered manually. The computer-scale includes means for serially weighing the packages, a price computer for computing the total package cost, and a printer for printing human readable data on a label. The system further includes means for applying a machine readable code symbol to each package, the symbol being located either on the above-mentioned label or on a separate label that is also attached to the package. The commodity related data, the weight, the total cost and the code symbol form a group of package-related data, and the data groups for the plurality of packages are transmitted to and stored in the central computer. The code symbols on the packages are scanned as the packages pass the checkout station in order to retrieve the commodity identification and the total cost of each package from the stored data groups. The groups of data may also be withdrawn from the central computer for data analysis purposes.