Abstract: A door latch includes a latch bolt and strike plate capable of transferring electricity therebetween. The latch bolt and strike plate may each include one or more complementary electrical leads such that electrical power and/or electrical signals may flow between the complementary electrical leads, when the electrical leads are in contact with one another.

Abstract: A direct memory access (DMA) device provides for transforming source data as it is transferred to a destination memory space. The transformation can encompass a range of arithmetic logic unit (ALU) operations. The transformation can include discerning comparative matches in the source address space, such that matched-indice-reference-offsets are transferred to destination memory. A processor requesting the transfer can also configure the transformation to be completed by writing configuration data to memory and/or programming the DMA device. In transforming data as it is transferred, the DMA device can obviate time-consuming processing otherwise done after conventional DMA transfers.