A memory system, including a flash memory including multiple memory blocks, and a controller configured to erase each of the memory blocks using multiple steps. The end of each journal is mated with and supports rotation of a roller bearing assembly, while rotating and pivoting within the roller bearing assembly upon articulation of the joint. The fluid conduits are, in a preferred form of the invention, carried on an outside surface of each arm and deliver irrigating fluid to an inside surface of each arm proximate to or within the working region. The complex component is subjected to a reliability test and reliability data is obtained for the component parts by comparing the measured variable for each of the component parts with the specification ranges to determine failure times. The sub BIOS of the embedded controller compares the temperature of the CPU with the upper temperature limit. Moreover, the disclosed signal generator supports up-ramping and down-ramping for smooth transmission of spread spectrum modulated signals.