| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electronic mobile type device that solves a problem to be required for switching an input mode operation to a complicated operation to enter data of Japanese characters, Kanji characters, and the special characters by using the electronic mobile type device with 10 trough 20 operation key buttons, which can also submit and receive Internet mail. SOLUTION: The present invention features a liquid crystal display unit for data entry operational keys, which is used for a mobile data terminal represented by a pocket telephone and installed data terminals represented by a personal computer and a telephone. The present invention also features that a user can identify operational keys in a dark environment with the liquid crystal display unit that displays characters, symbols, and numeric characters. This arrangement makes a user free to identify the operation keys in the dark environment.</p> |
