PURPOSE: To process the continuous graphic processing requests at a high speed by separating the control of each graphic processing request in accordance with the type of an instruction pointing device.

CONSTITUTION: A continuous instruction input means 11 receives the instructions for the continuous graphic processing requests given from a dial box and a mouse. A continuous instruction analyzing means 12 analyzes the contents of the instructions received by the means 11. A continuous instruction executing means 13 carries out the instructions based on the analyzing results of the means 12. A keyboard instruction input means 14 receives the instructions for the graphic processing requests given from the keyboard. A keyboard instruction analyzing means 15 analyzes the contents of the instructions received by the means 14. Then a keyboard instruction executing means 16 carries out the instructions based on the analyzing results of the means 15.