PROCESSOR FOR SALES REGISTRATION DATA OF ARTICLE

PROBLEM TO BE SOLVED: To make an individual article key allocated with an article of a bargaining object conspicuous compared with those allocated with other articles out of the bargaining object, during a bargain sale period. SOLUTION: The plurality of the individual-article keys for registering the single article is arrayed in a touch panel part 2a. A size of the individual article key allocate with the article of the bargaining object out of the respective individual-article keys is made larger than those allocated with the other articles out of the bargaining object, during the bargain sale period, or made different in its color from the other individual-article keys to get conspicuous.