| 摘要 |
A first and a second unit 1 and 2 with components mounted thereon in correspondence to respective function blocks, into which portable telephone set functions are grouped, are capable of being slidably moved between a stacked state position and an extended state position. The first unit 1 includes a first component-mounted part having a display 5 and a receiver 4 . The second unit 2 includes a second component-mounted part, which is covered when the stacked state position is brought about and exposed when the extended state position is brought about. The second unit 2 has a notch 9 , in which a first and a second auxiliary unit 11 and 12 are provided. A desired component-mounted part can be exposed and operated by causing selective sliding of the first and second units 1 and 2 and the first and second auxiliary units 11 and 12.
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