ELECTRONIC DEVICE AND METHOD FOR CHECKING CONNECTED STATE OF SIGNAL LINE THEREOF

摘要

The present invention launches an electronic device that can determine the signal line connection state. The electronic device includes a control unit which transmits check-up signals and a closed loop; and at least one module which receives the check-up signals. Once the check-up signals that go through the closed loop are received in the control unit, the control unit has established connection with at least one module.