| 摘要 |
A handheld electronic device includes: a housing which has complementary first and second housing parts, and one corner formed with a key access hole; a screen mounted to the housing; and a multi-directional key unit which includes a circuit board mounted in the housing, a micro stick switch mounted on the circuit board and connected electrically thereto, and an operating control key coupled to the micro stick switch and disposed in the key access hole. The operating control key has outer dimensions smaller than dimensions of the key access hole so as to permit movement of the operating control key in multiple directions in the key access hole.
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