Abstract: A multistage data routing system for routing a plurality of data streams comprises a cube comprising a plurality of stages sequentially numbered n-1 through 0 and an extra stage n situated to proceed n-1 of the cube. Stages n through 0 comprise a plurality of data switching boxes. Each box includes a first input port, a second input port, a first output port, a second output port, and apparatus for selectively coupling the first input port to at least one of the output ports and the second input port to at least one of the output ports. Extra stage n and stage 0 include apparatus for selectively bypassing stage n or stage 0 or neither stage n nor stage 0. The system further comprises a plurality of links, each coupling a selected ouput port of a selected stage to a selected input port of the next adjacent downstream stage.

Abstract: An electrically rechargeable battery comprising an inert cathode, a zinc anode and an aqueous alkaline electrolyte, for example, NaOH, in which said anode and cathode are immersed. The alkaline electrolyte in the vicinity of the cathode contains an alkali metal ferricyanide salt, such as K.sub.3 Fe(CN).sub.6 or Na.sub.3 Fe(CN).sub.6. Optionally, a mechanical separator is utilized between the anode and cathode to prevent gross mixing of the saturated electrolyte at the cathode with the electrolyte in the vicinity of the anode. Preferably, the separator is of the ion exchange type. During electrical discharge, at the anode and cathode, the battery produces soluble reaction products which are transported in the electrolyte to respective external storage tanks which increase battery capacity. During the charge cycle, the reverse conditions occur.