A memory device with a low power control circuit that reduces power while ensuring that the device remains in a low power mode until a high power mode has been requested. Specifically, the invention relates to methods and materials that can be used to vaccinate a mammal against specific self or non-self antigens. To closing structure folds down and the rods fold inward making the structure compact. The contact regions include fluorinated chains of molecules. Function assignment and the like are put under management by the control device 2, so that any modification or change is not required in the OS, drivers, and applications in association with change in key assignment, which is advantageous and effective for reduction of cost and time for product development. A pi bit is propagated with at least two instructions through an instruction flow path.