Abstract: A computer interface comprising a demultiplexer, multiplexer, and shift register for providing a data communication path between an input port and a selected one of a plurality of output ports. The data communication path is provided in response to an address signal received at the input port. A secondary address signal, derived from a previous address signal, is provided to each of the plurality of output ports. The resulting interface is hermaphroditic in that a first interface can address and communicate with a second interface coupled thereto. A tree-like cascading of one or more like interfaces produces a system for interfacing a computer with a plurality of remote peripheral devices. Embodiments of the present invention for both serial input and output ports and parallel input and output ports are presented.