| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable telephone set with a mouse key input which is enhanced in operability while being made small-sized and low in power consumption by reducing about 20 key buttons of a portable telephone set to only two. SOLUTION: A portable telephone main body 1 is provided with two key buttons which are a up-down and right-left button 2 and a select button 3, and a number 5, a character 6, etc., are displayed on a display 4 when necessary; and a cursor 7 is moved with the up-down and right-left button 2 and a choice is made with the select button 3. |
