PURPOSE: To provide a high-speed scroll even when the screen display speed is low due to restrictions of the hardware, OS and the like in the application program requiring the high-speed screen scroll such as a screen editor and the chart calculating software.

CONSTITUTION: A screen scroll control system is constituted of a scroll request monitor control means 1, a partial screen data generation/display means 2, a scroll occurrence time measurement control means 3, a time-out monitor control means 4, a means 5 for measuring the number of scroll requests, and a full-screen data generation display means 6.