Abstract: An automated teller machine includes: a lower module providing a space for accommodating mediums; and an upper module supported by the lower module and receiving mediums and guiding the mediums to the lower module. The upper module includes: an upper case disposed above the lower module; a main unit including a conveyance path, the main unit being placed in any one of a closed state in which the main unit is drawn in the upper case and an open state in which the main unit is drawn out of the upper case; an opening/closing unit hingedly connected to a lower portion of the main unit to expose the conveyance path to an outside; and a collision avoidance unit preventing the opening/closing unit from colliding with at least one of the upper case and the lower module when the main unit is switched from the open state to the closed state.

Abstract: A system for producing a sound having a certain frequency range to maintain laying hens in stable and comfortable conditions. includes a basic wave generator for generating a pair of first basic waves having the same phase and a pair of second basic waves having opposite phases, a relaxation wave generator for generating a pair of relaxation waves by combining the pair of first basic waves and the pair of second basic waves with time, a modulator for generating a pair of relaxation sounds by modulating the pair of relaxation waves with a sound wave having an audible frequency, and an audio output unit composed of two left and right parts such that stereo sound is outputted, for receiving the pair of relaxation sounds and outputting the pair of relaxation sounds to the left and right parts, respectively.