A multi-purpose self defense tool is provided which can be used for pinching an opponent, delivering a blow andor as a kinetic opening folding knife by positioning a pointed hump located on the non-cutting edge of the blade against an object or the body of an opponent and dragging the tool in a rapid motion. Voltage converters each transform an input reference voltage and supply the transformed voltage to a load element. The computing device may execute a security support thread concurrently with the code segment that reads one or more monitored memory locations. is provided by a heat-resistant tungsten fuse, and then preliminary dissociation of the reaction gas before introduced into the chamber is provided by a microwave generator.