1. A data entry system for generating an electronically stored coded representation of a character sequence from one or more electronically stored document images, comprising: an optical character recognition logic means for generating, from a document image and storing in a data base, character data specifying one of a plurality of possible character values for corresponding segments of the document image; the optical character recognition means generating a high or low confidence factor for each character; preprocessing means for generating composite images of possible character values for corresponding segments of a plurality of document images and pointers to characters in the data base for updating such character data; the preprocessing means arranging the segments in one type of the composite images which consists of groups of segments for which the character data specifies the same character value and has a high confidence factor; an interactive display means for generating and sequentially displaying, one or more types of composite images, each composite image comprising segments of the document image arranged according to like character data; the interactive display means having a correction mechanism responsive to a user input operation to enable the operator to correct the character data associated with the displayed segments; and post processing means for updating character data in the data base corrected by the operator using the pointer for the character data in the data base.