Abstract: A test system includes a test device configured to output a command address and a test dock for performing a test mode and to receive a comparison signal, and a memory device configured to enter the test mode, based on the command address, to set an initial value by the command address, to perform a calculation operation on the initial value according to a logic level combination of the command address to generate a row address and a command address during a pre-charge operation, and to compress and compare internal data output based on the row address and the column address to output the internal data as the comparison signal to the test device.

Abstract: Disclosed is a cushion tip-up type seat for a vehicle. The cushion tip-up type seat for a vehicle is configured to perform a tip-up function of a cushion part, and to move a seat leftward and rightward to adjust an interval between left and right seats, whereby left and right spacing between occupants seated in the seats is sufficiently secured and the convenience of the occupants is improved.

Abstract: Disclosed is electronic display board supporting structure installed on perimeter road. The electronic display board supporting structure including: a main post having a base plate installed at a lower end part thereof to be uprightly coupled to a base concrete member; a main frame formed of a rectangular pipe material such that an electronic display board case frame for constructing an electronic display board and a side pole for supporting an electronic display board case have a combined structure to reduce a total area and weight when an electronic display board is installed; and a connection member horizontally extended from the main frame to couple the main frame with the main post.