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The MSX Tracking, Attitude, and UVISI Processors

The amount of electronics involved in the Midcourse Space Experiment (MSX) required that common designs be used wherever possible. Three instruments—the tracking processor, the attitude processor, and the Ultraviolet and Visible Imagers and Spectrographic Imagers (UVISI) image processor—each use a general-purpose computer designed for MSX as well as common interface boards. Reference 1 describes the system requirements, design trade-offs, and computer features in great detail. Those features are summarized in what follows (see also Table 1).