To correctly recognize the flow of financial data even when the numerical values of the respective financial data are supplied with a substantial digit difference by separately coloring and displaying the obtained financial data by a graph pattern corresponding to the numerical values for respective items.

The display data write area of a display register corresponds to the display area of a dot matrix type in a color liquid crystal display part 16 one to one and display data stored in the display register are color displayed by colors specified by the control of a control part. At the time, corresponding to the ratio of the maximum value of '+' (positive) and the maximum value of '-' (negative) in the respective financial data PV, PMT and FV to be made into a graph stored in a RAM, the display area in the color liquid crystal display part 16 is divided into upper and lower parts, a horizontal axis is plotted and displayed in black and the respective financial data PV, PMT and FV are color divided as yellow for the PV, orange for the PMT and blue for the FV by the graph pattern of lengths corresponding to the respective numerical values, made into the graph and displayed on the black horizontal axis.