A stepper is a piece of equipment in semiconductor manufacturing. Each wafers initial pass through the stepper
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A stepper is a piece of equipment in semiconductor manufacturing. Each wafer’s initial pass through the stepper requires 15 minutes. For 40 percent of wafers, they make only a single pass through the stepper. But 60 percent of wafers need to make a second pass through the stepper. The processing time on the second pass is 40 minutes. How many wafers does the stepper complete per hour (wafers/hr)?
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Operations Management
ISBN: 9781260547610
2nd International Edition
Authors: Gerard Cachon, Christian Terwiesch
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