AQA A Level · Computer Science 7517

The stored program concept: Practice Questions

5 multiple-choice questions marked as you go, and 4 written questions with worked solutions. All on The stored program concept.

9 questions15 marksFree, no account
Question 1
1 mark

What is the primary function of the Memory Buffer Register (MBR) during the fetch stage of the Fetch-Execute cycle?

Question 2
1 mark

Which of the following sequences correctly represents the steps taken during the Fetch stage of the Fetch-Execute cycle?

Question 3
1 mark

Compare immediate addressing and direct addressing. In a machine with 8-bit operands, which statement is true?

Question 4
1 mark

Which of the following best describes the stored program concept as defined in the AQA specification?

Question 5
1 mark

An instruction is 8 bits long, consisting of a 4-bit opcode and a 4-bit operand. If the opcode \( 0010 \) represents a direct addressing 'LOAD' command and the operand is \( 1011 \), what does the processor load into the accumulator?

Question 6
2 marks

State the fundamental concept of the stored program concept as defined in computer architecture.

Write your answer out first, then check it against the worked solution.

Question 7
3 marks

An instruction is 8 bits long, with a 4-bit opcode and a 4-bit operand. Calculate the maximum number of distinct operations this processor can support.

Write your answer out first, then check it against the worked solution.

Question 8
2 marks

In the context of the stored program concept, how is the execution of machine code instructions generally described within main memory?

Write your answer out first, then check it against the worked solution.

Question 9
3 marks

Describe the Stored Program Concept as formulated by von Neumann. In your answer, refer to how instructions and data are handled by the system.

Write your answer out first, then check it against the worked solution.

* The content provided by thinka is generated by AI and may not always be accurate or up-to-date. Please use it as a supplementary resource and verify with official materials.

You've seen the model answer. Now get yours marked.

This page can show you how a good answer looks. It cannot tell you what your answer was missing. thinka marks your written work against the real mark scheme in about 15 seconds.

Get My Answers MarkedBack to the notes

Want more questions like these? Get a fresh set on this topic, graded as you go.

Practice More