Practice Summary Of The Unit (22.3.1) - Addressing Modes, Instruction Set and Instruction Execution Flow

Practice: Summary of the Unit

Lesson 22.3.1Addressing Modes, Instruction Set and Instruction Execution Flow

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10 questions

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4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
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6 sample questions

Question 1.
What is the purpose of the Program Counter (PC)?
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Think about how the CPU determines which instruction to execute next.
Question 2.
Define opcode in the context of instruction execution.
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Remember, it tells the CPU what to do.
3Question 3.
What is the main role of the Instruction Register (IR) in the CPU?
- Stores the address of the next instruction
- Holds the current instruction being executed
- Contains the results of the last operation
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Think about where instructions are kept while they are being processed.
4Question 4.
True or False: The opcode is part of the instruction that tells the CPU what operations to perform.
- True
- False
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Remember that every instruction has to tell the CPU what to do.
Question 5.
Explain how a CPU would handle a scenario where multiple interrupts occur as instructions are being executed.
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Consider the order of arrival and how the CPU would manage resources.
Question 6.
Design a simple operation sequence involving fetching, decoding, and executing for a hypothetical instruction using both direct and indirect addressing.
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Think about how you can juxtapose direct and indirect processes.

6 more questions in this section. Enroll free to practise them all.