Dominant negative alleles of human mismatch repair genes can be used to generate hypermutable cells and organisms. It thus becomes possible to perform driving by a main drive pulse suitable for the stepping motor in consideration of a characteristic variation of the stepping motor. The second connecting part has a second connecting terminal electrically connected to the second electronic module of the electronic apparatus. The initialization unit initializes the drive signal in synchronization with an internal command signal and terminates an initialization of the drive signal during a predetermined period. A processing unit avoids storing the intermediate value in the GPR based on the indication because the intermediate value is no longer needed for determining the final value. The parallel cycles operate in different temperature ranges with a lower temperature work output used to drive a working fluid pump.