PMT
Oxford Cambridge and RSA
Tuesday 14 May 2024 – Afternoon
AS Level Computer Science
H046/01 Computing Principles
Time allowed: 1 hour 15 minutes
Do not use:
* 9 0 7 5 9 7 3 1 8 4 *
• a calculator
* H 0 4 6 0 1 *
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink.
• Write your answer to each question in the space provided. You can use extra paper if
you need to, but you must clearly show your candidate number, the centre number and
the question numbers.
• Answer all the questions.
INFORMATION
• The total mark for this paper is 70.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 16 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2024 [601/5030/0] OCR is an exempt Charity
DC (ST/SG) 309118/4 Turn over
, PMT
2
Answer all the questions.
1 Here is a diagram of a computer system.
Control Bus
A
Address Bus
B D
ALU
RAM
C CIR
+1 E
Control Unit CPU
Identify each of the labelled components in this computer system.
A
B
C
D
E
[5]
© OCR 2024
, PMT
3
2* Most modern computers are designed using Von Neumann Architecture. However, in some
cases Harvard Architecture may be preferred.
Discuss the difference between Von Neumann Architecture and Harvard Architecture.
You should refer to the following in your answer:
• the different approaches each architecture takes to storing instructions and data
• the benefits of using a Von Neumann Architecture approach
• the benefits of using a Harvard Architecture approach. [9]
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© OCR 2024 Turn over
, PMT
4
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© OCR 2024
Oxford Cambridge and RSA
Tuesday 14 May 2024 – Afternoon
AS Level Computer Science
H046/01 Computing Principles
Time allowed: 1 hour 15 minutes
Do not use:
* 9 0 7 5 9 7 3 1 8 4 *
• a calculator
* H 0 4 6 0 1 *
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink.
• Write your answer to each question in the space provided. You can use extra paper if
you need to, but you must clearly show your candidate number, the centre number and
the question numbers.
• Answer all the questions.
INFORMATION
• The total mark for this paper is 70.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 16 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2024 [601/5030/0] OCR is an exempt Charity
DC (ST/SG) 309118/4 Turn over
, PMT
2
Answer all the questions.
1 Here is a diagram of a computer system.
Control Bus
A
Address Bus
B D
ALU
RAM
C CIR
+1 E
Control Unit CPU
Identify each of the labelled components in this computer system.
A
B
C
D
E
[5]
© OCR 2024
, PMT
3
2* Most modern computers are designed using Von Neumann Architecture. However, in some
cases Harvard Architecture may be preferred.
Discuss the difference between Von Neumann Architecture and Harvard Architecture.
You should refer to the following in your answer:
• the different approaches each architecture takes to storing instructions and data
• the benefits of using a Von Neumann Architecture approach
• the benefits of using a Harvard Architecture approach. [9]
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© OCR 2024 Turn over
, PMT
4
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© OCR 2024
