A data conversion system allowing the processing load of character set conversion at a terminal side to be minimized is disclosed. A first chip is positioned in the recess of the first beam, and a second chip is positioned in the recess of the second beam. A lower feed channel that is narrower than the cartridge holding area maintains cans in a nested stack as they are delivered to a product selection area. A first connecting member and a second connecting member connect the second signal ground and the second frame ground to each other.