| item | description | category | filter | more on... |
| DCSI | Data and Control Signal Interface | Governmental/NASA |
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| DCSI | Data Channel Status Indicators | Governmental/Military |
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| DCSI | Defense Communications System Installation | Governmental/Military |
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| DCSI | Distribution Control Systems, Inc. | Business/Firms |
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| DCSI | Downriver Community Services, Inc. | Non-Profit Organizations |
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