| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that complicated operation has been conventionally required by switching input mode for inputting Japanese language characters including Chinese characters and special characters as data, since the number of operation keys is usually about 12 to 20 pieces corresponding to figure keys and special keys even in a cellular phone device capable of transmitting and receiving Internet mail. SOLUTION: In this electronic device such as a portable information terminal typically represented by cellular phone device and an information terminal typically represented by personal computer and a stationary telephone device, an EL display device is arranged on the operation keys for inputting information so that a user can discriminate the operation keys by characters, sings and figures displayed on the operation keys by the EL display device. With such constitution, the user can discriminate the operation keys even in a dark place. |
