Practice Instruction Unit 6: Hardwired Control Unit (6.3.4)

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6 sample questions

Question 1.
What is a control unit?
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Think about which part of the computer directs operations.
Question 2.
Define a macro instruction.
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Try remembering the difference between high-level and low-level instructions.
3Question 3.
What defines a hardwired control unit?
- Fixed logic circuits
- Software-based system
- Dynamic programming
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Think about how this system produces its signals.
4Question 4.
True or False: A micro instruction can operate independently of a macro instruction.
- True
- False
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Reflect on how instructions are nested.
Question 5.
Design a control signal sequence for a given macro instruction to increment a counter in memory.
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Think about each step needed to modify the memory.
Question 6.
Compare and contrast the advantages of hardwired versus microprogrammed control units in specific applications.
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Factor in the complexity of the tasks each type processes.

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