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Automation System - Section 3 Multiple Questions and Answers.
| 21. | A Hall effect switch is usually used to: | ||
| A. | , measure voltage | ||
| B. | measure temperature | ||
| C. | sense a vacuum | ||
| D. | sense the presence of a magnetic object. | ||
| 22. | The hardware device Jhat acts as both a switching and connecting unit is called a(n): | ||
| A. | concentrator | ||
| B. | RS-232C port | ||
| C. | multiplexer | ||
| D. | communications processor | ||
| 23. | The addition of _____ can reduce processing time. | ||
| A. | A buffer | ||
| B. | An EPROM | ||
| C. | A converter | ||
| D. | A co-processor | ||
| 25. | What kind of capability is required if one plans to interface with a plotter or printer? | ||
| A. | A graphics cable | ||
| B. | RGB monitor | ||
| C. | A graphics board | ||
| D. | A co-processor | ||
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