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OCR GCSE in Computing J275
specification
version 2 September 2011

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Why choose OCR GCSE Computing?

A modern course for a modern world
This is a course that has real relevance in our modern world. While learners will no doubt already have some
knowledge of computers and related areas, the course will give them an in-depth understanding of how
computer technology…

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OCR GCSE in Computing ­ J275




QAN 500/8291/7 © OCR 2010 GCSE Computing September 2011 1

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Contents

1 Introduction to GCSE Computing 4

1.1 Overview of OCR GCSE Computing 4
1.2 Aims and learning outcomes 5
1.3 Guided Learning Hours 5

2 Content of GCSE Computing 6

2.1 Unit A451: Computer systems and programming 6
2.2 Unit A452: Practical investigation 12
2.3 Unit A453: Programming project…

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Contents

7 Administration of GCSE Computing 28

7.1 Availability of assessment 28
7.2 Making entries 28
7.3 Terminal rule 29
7.4 Unit and qualification re-sits 29
7.5 Enquiries about results 29
7.6 Shelf-life of units 30
7.7 Prohibited qualifications and classification code 30

8 Other information about GCSE Computing 31…

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1 1 Introduction to GCSE Computing

1.1 Overview of OCR GCSE Computing


Unit A451 Computer systems and programming

Written paper:
Candidates answer all
questions. Candidates answer all questions.QP that includes a mixture of
short and long answer questions, some of which will require
1.5 hours
candidates to write program code.…

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1

1.2 Aims and learning outcomes

GCSE specifications in Computing should encourage learners to be inspired, moved and challenged
by following a coherent, satisfying and worthwhile course of study. They should help learners to gain
an insight into related sectors. They should prepare learners to make informed decisions about further…

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2 2 Content of GCSE Computing

2.1 Unit A451: Computer systems and programming

This unit covers the body of knowledge about computer systems on which the examination will be
based.

2.1.1 Fundamentals of computer systems

This topic introduces computer systems and provides a foundation for the remaining topics in this…

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Binary logic

Candidates should be able to:
(d) explain why data is represented in computer systems in binary form
(e) understand and produce simple logic diagrams using the operations NOT, AND and OR
(f) produce a truth table from a given logic diagram.

Memory

Candidates should be able to:…

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2.1.3 Software

Candidates should be able to define the term software and have an understanding of:

Software

Candidates should be able to:
(a) explain the need for the following functions of an operating system: user interface, memory
management, peripheral management, multi-tasking and security
(b) describe the purpose and use…

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