Influences of coloration of touch panel interface on the several generation operators

In this paper, the usability of interface for the two generations were investigated by using several color designed operation panels. It is known that human´s eyesight ability and reaction velocity for a stimuli significantly decrease in accordance with getting age, and it starts when he is the former of twenties. Therefore, the subjects are divided into two groups, i.e., under thirtieth and over thirtieth in the experiments. Several kinds of interfaces which are colored by different types of brightness are prepared. The subjects are given mental arithmetic tests (single-digit ones), and they have to ask them quickly. Speed of operations and the correct answers are measured and counted. As a result, there are smaller difference among two groups when the brightness of colors used in a screen are medium-intensity. When the brightness are medium-intensity light, accuracy and speed are better than other cases. Furthermore there are bigger differences between the groups´s results with undecorated interface than that under the other conditions.