2025 Pearson Edexcel Level 1/Level 2 GCSE (9–1) Computer Science PAPER 1: Principles of Computer Science
Combined Question Paper & Marking Scheme
Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 1/Level 2 GCSE (9–1)
Monday 12 May 2025
Afternoon (Time: 1 hour 30 minutes) Paper
reference 1CP2/01
Computer Science
PAPER 1: Principles of Computer Science
You do not need any other materials. Total Marks
Instructions
•• Use black ink or ball-point pen.
Fill in the boxes at the top of this page with your name,
centre number and candidate number.
•• Answer all questions.
Answer the questions in the spaces provided
– there may be more space than you need.
• You are not allowed to use a calculator.
Information
•• The total mark for this paper is 75.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
Advice
• Read each question carefully before you start to answer it.
• Check
Try to answer every question.
• your answers if you have time at the end.
Turn over
,P78198A
©2025 Pearson Education Ltd.
Y:1/1/1/1/1/1/1/1/
,DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
BLANK PAGE
2
, Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in a box . If you change your mind about an
DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 Data
(a) Binary patterns consist of groups of bits.
(i) Identify the largest unit of measurement.
(1)
A Gibibyte
B Kibibyte
C Mebibyte
D Nibble
(ii) State the number of unique values that can be represented with 7 bits.
(1)
DO NOT WRITE IN THIS AREA
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
(iii) The denary ASCII code for D is 68.
Give the denary ASCII code for G.
(1)
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
(b) Hexadecimal is used to represent memory addresses.
(i) Give two characteristics of hexadecimal notation.
DO NOT WRITE IN THIS AREA
(2)
1 ............................................................................................................................... ............................................................................................................................... .................
............................................................................................................................... ............................................................................................................................... ......................
2 ............................................................................................................................... ............................................................................................................................... .................
............................................................................................................................... ............................................................................................................................... ......................
3
Turn over
Combined Question Paper & Marking Scheme
Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 1/Level 2 GCSE (9–1)
Monday 12 May 2025
Afternoon (Time: 1 hour 30 minutes) Paper
reference 1CP2/01
Computer Science
PAPER 1: Principles of Computer Science
You do not need any other materials. Total Marks
Instructions
•• Use black ink or ball-point pen.
Fill in the boxes at the top of this page with your name,
centre number and candidate number.
•• Answer all questions.
Answer the questions in the spaces provided
– there may be more space than you need.
• You are not allowed to use a calculator.
Information
•• The total mark for this paper is 75.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
Advice
• Read each question carefully before you start to answer it.
• Check
Try to answer every question.
• your answers if you have time at the end.
Turn over
,P78198A
©2025 Pearson Education Ltd.
Y:1/1/1/1/1/1/1/1/
,DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
BLANK PAGE
2
, Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in a box . If you change your mind about an
DO NOT WRITE IN THIS AREA
answer, put a line through the box and then mark your new answer with a cross .
1 Data
(a) Binary patterns consist of groups of bits.
(i) Identify the largest unit of measurement.
(1)
A Gibibyte
B Kibibyte
C Mebibyte
D Nibble
(ii) State the number of unique values that can be represented with 7 bits.
(1)
DO NOT WRITE IN THIS AREA
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
(iii) The denary ASCII code for D is 68.
Give the denary ASCII code for G.
(1)
............................................................................................................................... ............................................................................................................................... ......................
............................................................................................................................... ............................................................................................................................... ......................
(b) Hexadecimal is used to represent memory addresses.
(i) Give two characteristics of hexadecimal notation.
DO NOT WRITE IN THIS AREA
(2)
1 ............................................................................................................................... ............................................................................................................................... .................
............................................................................................................................... ............................................................................................................................... ......................
2 ............................................................................................................................... ............................................................................................................................... .................
............................................................................................................................... ............................................................................................................................... ......................
3
Turn over
