Quelpr
2 marksComputer Organisation

CAPE Computer Science Unit 1 · 2012 · Paper 2 · Question 2(b)(i)

Distinguish between the opcode and the operands of an instruction.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 2(a)(i)Explain what is meant by the 'instruction set' of a central processing unit (CPU).[2 marks]
  2. 2(a)(ii)Briefly describe THREE types of instructions that are typically included in an instruction set.[6 marks]
  3. 2(a)(iii)Explain how cache memory can increase the efficiency of data retrieval.[3 marks]
  4. 2(b)(ii)Two typical instruction formats are one-address and two-address. Describe how the operands are obtained in EACH case and specify where the results are stored.[6 marks]
  5. 2(c)(i)Explain how a hard disk differs from RAM in terms of access method and access speed.[3 marks]
  6. 2(c)(ii)Explain how RAM differs from a CD-R device in terms of volatility and storage capacity.[3 marks]

More practice: the rest of this paper · more Computer Organisation questions · all CAPE Computer Science Unit 1 past papers