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EnglandComputer ScienceQuick questions

1.1 Components of a computer and their uses

Quick questions on Assembly language, the LMC and addressing modes - OCR A-Level Computer Science H446

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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State what the opcode and the operand of an instruction each specify. [2 marks]
What is q2?
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State the difference between immediate and direct addressing. [2 marks]
What is q3?
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State one reason indexed addressing is useful. [1 mark]

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