Glossary

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z-buffer A buffer that stores a depth value for each pixel in a scene. Pixels with a small z-value overwrite pixels with a large z-value. z-order A stack of overlapping windows. Each window has a unique position in the z-order. Zero Power State (ZPS) A power state that indicates a hibernation state in which the automotive computing device powers off all RAM and other subsystems. zeroth order clock correction A rough numerical measure of the bias in the time reported by a Global Positioning System (GPS) satellite.