Abstract: A positional stop device includes a base body, a lever, a driving element, and a retaining member. The lever is rotatablely arranged on the base body, a first end of the lever couples to the driving element, and a second end of the lever couples to the retaining member. The driving element is partially exposed out of the base body. The retaining member is moveablely received in the base body. When the slider of a pneumatic rodless cylinder slides along a first direction, the driving element is driven by the slider to move along a second direction and be fully received in the base body. The lever is driven by the driving element to rotate around the base body. The retaining member is driven by the lever to move along a third direction and to be partially exposed out of the base body to stops the slider from sliding.

Abstract: A testing apparatus for testing a circuit board is disclosed, which includes an upper plate, a lower plate, and an adaptor circuit board. A plurality of positioning units is received in the lower plate. Each positioning unit has a plurality of length-variable test probes secured therein. Each test probe has a shell and upper and lower probe ends at opposite ends of the shell. In test, the circuit board is put on the lower plate and the upper plate is lowered to push the circuit board and the lower plate toward the adaptor circuit board. The upper ends of the test probes engage with electrical connectors of the circuit board and the lower ends thereof engage with the adaptor circuit board whereby test of the circuit board can be automatically performed by the testing apparatus.

Abstract: A framework for tracking an electronic device includes at least one electronic device, a server in wireless communication with the at least one electronic device, and a tracking system implemented in the server and the at least one electronic device. The server stores personal identification information of the at least one electronic device, and a database. The tracking system is used to track the at least one electronic device after the at least one electronic device is lost or stolen. The server controls the at least one electronic device to obtain tracking information for tracking the at least one electronic device, and the at least one electronic device sends the tracking information to the server. The server tracks the at least one electronic device by searching for information in the database most closely matching the tracking information.

Abstract: A positional stop device includes a base body, a lever, a driving element, and a retaining member. The lever is rotatablely arranged on the base body, a first end of the lever couples to the driving element, and a second end of the lever couples to the retaining member. The driving element is partially exposed out of the base body. The retaining member is moveablely received in the base body. When the slider of a pneumatic rodless cylinder slides along a first direction, the driving element is driven by the slider to move along a second direction and be fully received in the base body. The lever is driven by the driving element to rotate around the base body. The retaining member is driven by the lever to move along a third direction and to be partially exposed out of the base body to stops the slider from sliding.

Abstract: A framework for tracking an electronic device includes at least one electronic device, a server in wireless communication with the at least one electronic device, and a tracking system implemented in the server and the at least one electronic device. The server stores personal identification information of the at least one electronic device, and a database. The tracking system is used to track the at least one electronic device after the at least one electronic device is lost or stolen. The server controls the at least one electronic device to obtain tracking information for tracking the at least one electronic device, and the at least one electronic device sends the tracking information to the server. The server tracks the at least one electronic device by searching for information in the database most closely matching the tracking information.

Abstract: A testing apparatus for testing a circuit board is disclosed, which includes an upper plate, a lower plate, and an adaptor circuit board. A plurality of positioning units is received in the lower plate. Each positioning unit has a plurality of length-variable test probes secured therein. Each test probe has a shell and upper and lower probe ends at opposite ends of the shell. In test, the circuit board is put on the lower plate and the upper plate is lowered to push the circuit board and the lower plate toward the adaptor circuit board. The upper ends of the test probes engage with electrical connectors of the circuit board and the lower ends thereof engage with the adaptor circuit board whereby test of the circuit board can be automatically performed by the testing apparatus.

Abstract: A method for monitoring operations of an electronic device is provided. The method includes: determining, at the electronic device, a data range of standard operations of the electronic device; storing, at the electronic device, the data range; obtaining, at the electronic device, motion data of the electronic device when the electronic device is in operation; determining, at the electronic device, whether the motion data is within the data range; and outputting, at the electronic device, an alert message representing current operation of the electronic device is unsatisfactory if the motion data is not within the data range.