The invention discloses a compact and low-priced nonreciprocal circuit device that can reduce insertion losses. The movable platen according to embodiments includes a printing orifice through which the print head may interact with a surface of an item for printing. For example, an ODU2 can be mapped into an ODU2e, an ODU3 can be mapped into an ODU3e2, an ODU4 can be mapped into an ODUG or some other overclocked variant of ODU4, and the like. The FED further includes an anode that is spaced apart from the second opening and collects secondary electrons emitted from the second opening. At least a portion of the list is transmitted to the handheld device according to the sorted order. The signal decoder may be coupled to the signal coder.