Patent ID: 7672988
Filing Date: 2010-03-02
Classification: G06F

Abstract:
1. A display control method for a scientific electronic calculator comprising a key input unit and a display unit, wherein the key input unit comprises numeric keys and function menu keys, the display control method comprising: a menu displaying step of displaying a menu screen for functional arithmetic processings on the display unit when one of the function menu keys is operated, wherein a portion of the numeric keys are assigned to the functional arithmetic processings; a functional arithmetic processing step of, when one of the numeric keys assigned to one of the functional arithmetic processings is operated during display of the menu screen, executing a functional arithmetic processing corresponding to the operated numeric key; a first invalid input informing step of displaying a first specific mark on the display unit when one of the numeric keys other than the numeric keys assigned to the functional arithmetic processings is operated during display of the menu screen, and of returning the display unit to the menu screen; and a second invalid input informing step of displaying a second specific mark on the display unit when a key other than any one of the numeric keys is operated during display of the menu screen, and of returning the display unit to a screen immediately before the menu screen.