An electromagnetic actuator is provided, including an object lens holder hanged by a set of wires forming suspended object. Each ejection integrated circuit has a plurality of ejection nozzles. A sensor senses the reciprocating movement in response to the light tap. The addition, in response to SizeA greater than SizeB, may further include updating R and the carry bit in view of one or more elements of A that do not have corresponding element or elements of B. Each segment may be of sufficient length to support multiple individual coil turns in a helical configuration.