Abstract: A circuit board assembly includes a substrate, a flexible printed circuit board and an electrical component. The substrate includes a first electrically connecting port. The flexible printed circuit board includes a main body and a branch body. The main body includes two second electrically connecting ports opposite to each other. One of the two second electrically connecting ports is electrically connected to the first electrically connecting port. One end of the branch body is connected to the main body. Another end of the branch body is disposed with an additional electrically connecting port. The electrical component is disposed on and electrically connected to the additional electrically connecting port. The electrical component is electrically connected to the substrate via the flexible printed circuit board.

Abstract: An incoming call notification device includes a first connecting unit for the connection with a portable media player; a second connecting device for communicating with the communication device and receiving an incoming call signal; an interrupting module for sending an interruption signal to the portable media player to interrupt the playing content of the portable media player; an incoming call notification storage module for storing at least one notification ring; and a processing module for sending the notification ring to the portable media player to play once the playing content is interrupt, so that the user knows of the incoming call.