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A Level course · A Level

A Level Computer Science.

Explore published lessons, unit by unit. Open each lesson for explanations, practice and available review resources.

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Data Representation

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44 lessons left

Course progress

44/44

Topic 1: Information representation

3 lessons3 units

Unit 01

Data Representation

0/1

Data RepresentationLesson

Unit 02

Multimedia

0/1

MultimediaLesson

Unit 03

Compression

0/1

CompressionLesson

Topic 2: Communication

1 lessons1 unit

Unit 01

Networks including the internet

0/1

Networks including the internetLesson

Topic 3: Hardware

2 lessons2 units

Unit 01

Computers and their components

0/1

Computers and their componentsLesson

Unit 02

Logic Gates and Logic Circuits

0/1

Logic Gates and Logic CircuitsLesson

Topic 4: Processor Fundamentals

3 lessons3 units

Unit 01

Central Processing Unit (CPU) Architecture

0/1

Central Processing Unit (CPU) ArchitectureLesson

Unit 02

Assembly Language

0/1

Assembly LanguageLesson

Unit 03

Bit manipulation

0/1

Bit manipulationLesson

Topic 5: System Software (AS Level)

2 lessons2 units

Unit 01

Operating Systems

0/1

Operating SystemsLesson

Unit 02

Language Translators

0/1

Language TranslatorsLesson

Topic 6: Security, privacy and data integrity

2 lessons2 units

Unit 01

Data Security

0/1

Data SecurityLesson

Unit 02

Data Integrity

0/1

Data IntegrityLesson

Topic 7: Ethics and Ownership

1 lessons1 unit

Unit 01

Ethics and Ownership

0/1

Ethics and OwnershipLesson

Topic 8: Databases

3 lessons3 units

Unit 01

Database Concepts

0/1

Database ConceptsLesson

Unit 02

Database Management Systems (DBMS)

0/1

Database Management Systems (DBMS)Lesson

Unit 03

Data Definition Language (DDL) and Data Manipulation Language (DML)

0/1

Data Definition Language (DDL) and Data Manipulation Language (DML)Lesson

Topic 9: Algorithm Design and Problem-solving

2 lessons2 units

Unit 01

Computational Thinking Skills

0/1

Computational Thinking SkillsLesson

Unit 02

Algorithms

0/1

AlgorithmsLesson

Topic 10: Data Types and Structures

4 lessons4 units

Unit 01

Data Types and Records

0/1

Data Types and RecordsLesson

Unit 02

Arrays

0/1

ArraysLesson

Unit 03

Files

0/1

FilesLesson

Unit 04

Introduction to Abstract Data Types (ADT)

0/1

Introduction to Abstract Data Types (ADT)Lesson

Topic 11: Programming

3 lessons3 units

Unit 01

Programming Basics

0/1

Programming BasicsLesson

Unit 02

Constructs

0/1

ConstructsLesson

Unit 03

Structured Programming

0/1

Structured ProgrammingLesson

Topic 12: Software Development

3 lessons3 units

Unit 01

Program Development Life cycle

0/1

Program Development Life cycleLesson

Unit 02

Program Design

0/1

Program DesignLesson

Unit 03

Program Testing and Maintenance

0/1

Program Testing and MaintenanceLesson

Topic 13: Data Representation

3 lessons3 units

Unit 01

User-defined data types

0/1

User-defined data typesLesson

Unit 02

File organisation and access

0/1

File organisation and accessLesson

Unit 03

Floating-point numbers, representation and manipulation

0/1

Floating-point numbers, representation and manipulationLesson

Topic 14: Communication and internet technologies

2 lessons2 units

Unit 01

Protocols

0/1

ProtocolsLesson

Unit 02

Circuit switching, packet switching

0/1

Circuit switching, packet switchingLesson

Topic 15: Hardware and Virtual Machines

2 lessons2 units

Unit 01

Processors, Parallel Processing and Virtual Machines

0/1

Processors, Parallel Processing and Virtual MachinesLesson

Unit 02

Boolean Algebra and Logic Circuits

0/1

Boolean Algebra and Logic CircuitsLesson

Topic 16: System Software (A Level)

2 lessons2 units

Unit 01

Purposes of an Operating System (OS)

0/1

Purposes of an Operating System (OS)Lesson

Unit 02

Translation Software

0/1

Translation SoftwareLesson

Topic 17: Security

1 lessons1 unit

Unit 01

Encryption, Encryption Protocols and Digital Certificates

0/1

Encryption, Encryption Protocols and Digital CertificatesLesson

Topic 18: Artificial Intelligence (AI)

1 lessons1 unit

Unit 01

Artificial Intelligence (AI)

0/1

Artificial Intelligence (AI)Lesson

Topic 19: Computational thinking and Problem-solving

2 lessons2 units

Unit 01

Algorithms

0/1

AlgorithmsLesson

Unit 02

Recursion

0/1

RecursionLesson

Topic 20: Further Programming

2 lessons2 units

Unit 01

Programming Paradigms

0/1

Programming ParadigmsLesson

Unit 02

File Processing and Exception Handling

0/1

File Processing and Exception HandlingLesson

NEXTStart somewhere

Forty-four lessons.
Start with one.

Open a lesson to explore its available videos, audio, notes and flashcards. Resource access follows your preview allowance or subscription.

Open the first lesson

Loading learning progress…

A Level course · A Level

A Level Computer Science.

Explore published lessons, unit by unit. Open each lesson for explanations, practice and available review resources.

Next lesson

Data Representation

Continue this lesson

44 lessons left

Course progress

44/44

Topic 1: Information representation

3 lessons3 units

Unit 01

Data Representation

0/1

Data RepresentationLesson

Unit 02

Multimedia

0/1

MultimediaLesson

Unit 03

Compression

0/1

CompressionLesson

Topic 2: Communication

1 lessons1 unit

Unit 01

Networks including the internet

0/1

Networks including the internetLesson

Topic 3: Hardware

2 lessons2 units

Unit 01

Computers and their components

0/1

Computers and their componentsLesson

Unit 02

Logic Gates and Logic Circuits

0/1

Logic Gates and Logic CircuitsLesson

Topic 4: Processor Fundamentals

3 lessons3 units

Unit 01

Central Processing Unit (CPU) Architecture

0/1

Central Processing Unit (CPU) ArchitectureLesson

Unit 02

Assembly Language

0/1

Assembly LanguageLesson

Unit 03

Bit manipulation

0/1

Bit manipulationLesson

Topic 5: System Software (AS Level)

2 lessons2 units

Unit 01

Operating Systems

0/1

Operating SystemsLesson

Unit 02

Language Translators

0/1

Language TranslatorsLesson

Topic 6: Security, privacy and data integrity

2 lessons2 units

Unit 01

Data Security

0/1

Data SecurityLesson

Unit 02

Data Integrity

0/1

Data IntegrityLesson

Topic 7: Ethics and Ownership

1 lessons1 unit

Unit 01

Ethics and Ownership

0/1

Ethics and OwnershipLesson

Topic 8: Databases

3 lessons3 units

Unit 01

Database Concepts

0/1

Database ConceptsLesson

Unit 02

Database Management Systems (DBMS)

0/1

Database Management Systems (DBMS)Lesson

Unit 03

Data Definition Language (DDL) and Data Manipulation Language (DML)

0/1

Data Definition Language (DDL) and Data Manipulation Language (DML)Lesson

Topic 9: Algorithm Design and Problem-solving

2 lessons2 units

Unit 01

Computational Thinking Skills

0/1

Computational Thinking SkillsLesson

Unit 02

Algorithms

0/1

AlgorithmsLesson

Topic 10: Data Types and Structures

4 lessons4 units

Unit 01

Data Types and Records

0/1

Data Types and RecordsLesson

Unit 02

Arrays

0/1

ArraysLesson

Unit 03

Files

0/1

FilesLesson

Unit 04

Introduction to Abstract Data Types (ADT)

0/1

Introduction to Abstract Data Types (ADT)Lesson

Topic 11: Programming

3 lessons3 units

Unit 01

Programming Basics

0/1

Programming BasicsLesson

Unit 02

Constructs

0/1

ConstructsLesson

Unit 03

Structured Programming

0/1

Structured ProgrammingLesson

Topic 12: Software Development

3 lessons3 units

Unit 01

Program Development Life cycle

0/1

Program Development Life cycleLesson

Unit 02

Program Design

0/1

Program DesignLesson

Unit 03

Program Testing and Maintenance

0/1

Program Testing and MaintenanceLesson

Topic 13: Data Representation

3 lessons3 units

Unit 01

User-defined data types

0/1

User-defined data typesLesson

Unit 02

File organisation and access

0/1

File organisation and accessLesson

Unit 03

Floating-point numbers, representation and manipulation

0/1

Floating-point numbers, representation and manipulationLesson

Topic 14: Communication and internet technologies

2 lessons2 units

Unit 01

Protocols

0/1

ProtocolsLesson

Unit 02

Circuit switching, packet switching

0/1

Circuit switching, packet switchingLesson

Topic 15: Hardware and Virtual Machines

2 lessons2 units

Unit 01

Processors, Parallel Processing and Virtual Machines

0/1

Processors, Parallel Processing and Virtual MachinesLesson

Unit 02

Boolean Algebra and Logic Circuits

0/1

Boolean Algebra and Logic CircuitsLesson

Topic 16: System Software (A Level)

2 lessons2 units

Unit 01

Purposes of an Operating System (OS)

0/1

Purposes of an Operating System (OS)Lesson

Unit 02

Translation Software

0/1

Translation SoftwareLesson

Topic 17: Security

1 lessons1 unit

Unit 01

Encryption, Encryption Protocols and Digital Certificates

0/1

Encryption, Encryption Protocols and Digital CertificatesLesson

Topic 18: Artificial Intelligence (AI)

1 lessons1 unit

Unit 01

Artificial Intelligence (AI)

0/1

Artificial Intelligence (AI)Lesson

Topic 19: Computational thinking and Problem-solving

2 lessons2 units

Unit 01

Algorithms

0/1

AlgorithmsLesson

Unit 02

Recursion

0/1

RecursionLesson

Topic 20: Further Programming

2 lessons2 units

Unit 01

Programming Paradigms

0/1

Programming ParadigmsLesson

Unit 02

File Processing and Exception Handling

0/1

File Processing and Exception HandlingLesson

NEXTStart somewhere

Forty-four lessons.
Start with one.

Open a lesson to explore its available videos, audio, notes and flashcards. Resource access follows your preview allowance or subscription.

Open the first lesson

A Level Computer Science.

Data Representation

Topic 1: Information representation

Data Representation

Multimedia

Compression

Topic 2: Communication

Networks including the internet

Topic 3: Hardware

Computers and their components

Logic Gates and Logic Circuits

Topic 4: Processor Fundamentals

Central Processing Unit (CPU) Architecture

Assembly Language

Bit manipulation

Topic 5: System Software (AS Level)

Operating Systems

Language Translators

Topic 6: Security, privacy and data integrity

Data Security

Data Integrity

Topic 7: Ethics and Ownership

Ethics and Ownership

Topic 8: Databases

Database Concepts

Database Management Systems (DBMS)

Data Definition Language (DDL) and Data Manipulation Language (DML)

Topic 9: Algorithm Design and Problem-solving

Computational Thinking Skills

Algorithms

Topic 10: Data Types and Structures

Data Types and Records

Arrays

Files

Introduction to Abstract Data Types (ADT)

Topic 11: Programming

Programming Basics

Constructs

Structured Programming

Topic 12: Software Development

Program Development Life cycle

Program Design

Program Testing and Maintenance

Topic 13: Data Representation

User-defined data types

File organisation and access

Floating-point numbers, representation and manipulation

Topic 14: Communication and internet technologies

Protocols

Circuit switching, packet switching

Topic 15: Hardware and Virtual Machines

Processors, Parallel Processing and Virtual Machines

Boolean Algebra and Logic Circuits

Topic 16: System Software (A Level)

Purposes of an Operating System (OS)

Translation Software

Topic 17: Security

Encryption, Encryption Protocols and Digital Certificates

Topic 18: Artificial Intelligence (AI)

Artificial Intelligence (AI)

Topic 19: Computational thinking and Problem-solving

Algorithms

Recursion

Topic 20: Further Programming

Programming Paradigms

File Processing and Exception Handling

Forty-four lessons.Start with one.

A Level Computer Science.

Data Representation

Topic 1: Information representation

Data Representation

Multimedia

Compression

Topic 2: Communication

Networks including the internet

Topic 3: Hardware

Computers and their components

Logic Gates and Logic Circuits

Topic 4: Processor Fundamentals

Central Processing Unit (CPU) Architecture

Forty-four lessons.
Start with one.

Forty-four lessons.
Start with one.