Abstract: A system for illuminating a light emitting panel for backlighting a visual display positions the panel behind the visual display at a front wall of a processor cabinet. The light emitting panel has at least one layer of optical fibers which extend from the panel and are bundled and terminated in one or more receptors which are mounted in the cabinet remote from the panel and visual display. A cover is hinged to the cabinet and mounts a light source in operative alignment with the receptors when the cover is closed to illuminate the panel and display. The cover can be swung open to position the light source in a maintenance position in which light bulbs of the source can be removed and replaced.

Abstract: A memory circuit for storing words of data has two memory banks each formed by a plurality of memory devices connected in parallel. In a first mode, the memory circuit responds to an initial request for access and an address signal by reading data from a storage location in one of the memory banks. Subsequent requests for access to contiguous storage locations do not require an address signal, instead a control mechanism responds by generating an address to read data alternately from storage locations in the first and second memory banks. In a second mode, the memory circuit responds to every request for access to the memory circuit by enabling access to the first or second memory bank as indicated by an address which accompanied the request. The memory devices of a given bank are erased and programmed in parallel.