USER-FRIENDLY DISPLAY OF DATA

A display apparatus for displaying accumulated data items includes obtaining means for obtaining a plurality of data items accumulated, classifying means for classifying the plurality of data items into N groups on the basis of predetermined criteria, display-control means for controlling an indication on a display unit such that the plurality of data are displayed in N display regions corresponding to the N groups, and accepting means for accepting a specification of one display region from among the N display regions. When the accepting means accepts a specification of one display region from among the N display regions, the classifying means classifies a plurality of data items displayed in the specified display region into a further N groups, and the display-control means controls an indication on the display unit such that the plurality of data items are displayed in the N display regions corresponding to the N groups.