To successively prepare a desired kind of graph from data in a chart format, and to display it at a desired position by simple setting.

A record file being the object of slip preparation and an output configuration definition slip or the like are stored in an outside storing device 8. The output configuration definition slip defines the basic form of a slip, and it is used at the time of generating and outputting the slip based on the above mentioned record file. A graphing table 4 is a storage area for storing a set content for preparing and outputting a graph in a format corresponding to the above mentioned output configuration definition slip. A graph data memory 5 is a storage area for storing graph data obtained in a process for operating a processing for preparing a graph according to the set content of the graphing table 4. A CPU 1 operates a processing for preparing a chart based on the aforesaid output configuration definition slip, and a processing for preparing a graph according to the set content of the graphing table 4.