Abstract: An air conditioner including a housing having an inlet and an outlet, a heat exchanger disposed inside the housing to exchange heat with air introduced into the inlet, a fan configured to blow air heat-exchanged in the heat exchanger to the outlet, and a speech recognizer including a microphone, a speaker, and a case accommodating the microphone and the speaker, and to operate the air conditioner using the microphone and the speaker.

Abstract: An external memory device configured to communicate with an external electronic device includes: a semiconductor substrate including a first edge and a second edge perpendicular to the first edge; a semiconductor integrated circuit device provided on the semiconductor substrate, the semiconductor integrated circuit device including a memory device configured to store data provided from the external electronic device, an input/output interface configured to interface with the external electronic device, and a controller configured to control the memory device in response to a signal transmitted through the input/output interface; an insulating layer covering the semiconductor integrated circuit device; and external input/output pins provided adjacent to the first edge on the insulating layer and configured to establish an electrical connection between the external electronic device and the semiconductor integrated circuit device.

Abstract: A fuel circulation system for a dimethyl-ether fuel vehicle may include a fuel tank storing a fuel, a fuel supply line connected to the fuel tank, a fuel supply pump disposed in the fuel supply line and supplying the fuel to a fuel injection system under pressure, a common rail maintaining the pressure of the fuel pressurized from the fuel supply pump, the fuel injection system injecting the fuel supplied from the common rail, a fuel return line fluid-communicating with and diverging from the fuel injection system and/or the common rail to collect remaining fuel of the fuel, and a fuel cooling system disposed on the fuel return line such that a return fuel returned from the fuel injection system and/or the common rail passes therethrough, wherein the fuel cooling system may be disposed close to a heater core to exchange a heat of the return fuel.

Abstract: A fuel cooling system for a dimethyl-ether fuel vehicle includes a fuel tank storing dimethyl-ether, a fuel supply line introducing the dimethyl-ether into an engine, a fuel supply pump, pressurizing the dimethyl-ether, and sending the pressurized dimethyl-ether to a fuel injection system, a common rail maintaining a pressure of the pressurized dimethyl-ether from the fuel supply pump, a fuel injection system injecting the pressurized dimethyl-ether supplied from the common rail, a fuel return line communicating with and diverging from the fuel injection system, the common rail and/or a downstream side of the fuel supply pump to collect remaining dimethyl-ether, a fuel cooling device disposed in the fuel return line, and a drain pipe to discharge condensed water generated from an evaporator disposed in an air conditioner, wherein discharged condensed water from the drain pipe is supplied to the fuel cooling device and cools the collected dimethyl-ether.