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A-Level

The 12 pages go over a variety of questions within each topic.  Below is a list of excellent resources regarding on-line content for A-Level Computer Science in general.

Issac Computer Science

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Crash Course Computer Science (PBS)

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Computerphile

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https://craigndave.org/ocr-alevel-h046-h446/

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Gresham School IT Lectures

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Other quality resources linked on the digest page.

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Contents(OCR)

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Component 1

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Unit 1: Components of a computer and their uses

  • Topic 1: Structure and function of the processor

  • Topic 2: The processor

  • Topic 3: Types of processor

  • Topic 4: Input devices

  • Topic 5: Output devices

  • Topic 6: Storage devices

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Unit 2: Systems software and applications generation

  • Topic 1: Functions of an operating system

  • Topic 2: Types of operating system

  • Topic 3: The nature of applications

  • Topic 4: Program translators

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Unit 3: Software development

  • Topic 1: Systems analysis methods

  • Topic 2: Writing and following algorithms

  • Topic 3: Programming paradigms

  • Topic 4: Assembly language

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Unit 4: Exchanging data 

  • Topic 1: Compression, encryption and hashing

  • Topic 2: Database concepts

  • Topic 3: Relational databases and normalisation

  • Topic 4: Introduction to SQL

  • Topic 5: Defining and updating tables using SQL

  • Topic 6: Transaction processing

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Unit 5: Networks and web technologies

  • Topic 1: Structure of the Internet

  • Topic 2: Internet communication

  • Topic 3: Network security and threats

  • Topic 4: HTML and CSS

  • Topic 5: Web forms and JavaScript

  • Topic 6: Search engine indexing

  • Topic 7: Client-server and peer-to-peer

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Unit 6: Datatypes

  • Topic 1: Datatypes, binary and hexadecimal

  • Topic 2: ASCII and Unicode

  • Topic 3: Binary arithmetic

  • Topic 4: Floating-point arithmetic

  • Topic 5: Bitwise manipulation

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Unit 7: Data structures

  • Topic 1: Arrays, tuples, and records

  • Topic 2: Queues

  • Topic 3: Lists and linked lists

  • Topic 4: Stacks

  • Topic 5: Hash tables

  • Topic 6: Graphs

  • Topic 7: Trees

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Unit 8: Boolean algebra

  • Topic 1: Logic gates and truth tables

  • Topic 2: Simplifying Boolean expressions

  • Topic 3: Karnaugh maps

  • Topic 4: D-type flip-flops, half and full adders

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Unit 9: Legal, moral, ethical and cultural issues

  • Topic 1: Computing related legislation

  • Topic 2: Ethical, moral and cultural issues

  • Topic 3: Privacy and censorship

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Component 2

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Unit 10: Computational thinking

  • Topic 1: Thinking abstractly

  • Topic 2: Thinking ahead

  • Topic 3: Thinking procedurally

  • Topic 4: Thinking logically, thinking concurrently

  • Topic 5: Problem recognition

  • Topic 6: Problem-solving

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Unit 11: Programming techniques

  • Topic 1: The IDE and programming basics

  • Topic 2: Selection

  • Topic 3: Iteration

  • Topic 4: Subroutines

  • Topic 5: Recursion

  • Topic 6: Use of object-oriented techniques

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Unit 12: Algorithms

  • Topic 1: Analysis and design of algorithms

  • Topic 2: Searching algorithms

  • Topic 3: Bubble sort and insertion sort

  • Topic 4: Merge sort and quicksort

  • Topic 5: Graph traversal algorithms

  • Topic 6: Optimisation algorithms​

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Specification,  

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