This teaches students how sound is is sampled and stored in a digital form along with what is sample rate, bit depth, and duration of sound files. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Duration: 1 Lesson This resource is designed to cover: Analogue waves. How sound is sampled and store in a digital form on a computer. Factors affecting sound quality: sample rate and bit depth. Calculating the size of sound files. ⠀ Other complete lessons in Unit 1.2: RAM, ROM, and Virtual Memory (Primary Storage) Units of Storage Secondary Storage Binary Crash Course Representing Images Representing Sound (Current) Representing Characters Compression

This resource covers network threats, including malware, social engineering, brute-force, denial-of-service, data interception & theft, and SQL injection. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom-made exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Duration: 2 Lessons This resource is designed to cover: Malware Social Engineering Brute-Force Attacks Denial-of-Service Attacks Data Interception Data Theft Concept of SQL injection Purpose of each threat and how it is used. ⠀

This resource covers the common ways vulnerabilities can be removed: penetration testing, anti-malware software, firewalls, user access levels, passwords, encryption, and physical security. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom-made exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Duration: 2 Lessons This resource is designed to cover: How network threats are limited. Common vulnerability prevention methods: Penetration Testing Anti-Malware Software Firewalls User Access Levels Passwords Encryption Physical Security ⠀

This is designed to teach students how images are represented in computers. It provides an overview on bitmaps and vectors, and goes into detail on how pixels are represented. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Duration: 1 Lesson This resource is designed to cover: How an image is represented using pixels. How each pixel is represented. Effect of colour depth and resolution on images. Metadata. Calculating the size of an image file. ⠀ Other complete lessons in Unit 1.2: RAM, ROM, and Virtual Memory (Primary Storage) Units of Storage Secondary Storage Binary Crash Course Representing Images (Current) Representing Sound Representing Characters Compression

This lesson teaches students about the principle of standards and the different network protocols that are used for communication. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom-made exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Duration: 1 Lesson This resource is designed to cover: Principle of Standards Different Types of Network Protocols and their Purpose: TCP/IP HTTP HTTPS FTP SMTP POP IMAP ⠀ Other complete lessons in Unit 1.3: Types of Networks Network Performance Network Hardware The Internet Network Topologies Encryption (Free) Standards and Network Protocols (Current) Network Connections

This lesson teaches students about the star and mesh network topologies. This includes the advantages and disadvantages of each topology. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom-made exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Duration: 1-2 Lessons This resource is designed to cover: Star Network Topology Mesh Network Topology Advantages and Disadvantages of the Star and Mesh Topologies ⠀ Other complete lessons in Unit 1.3: Types of Networks Network Performance Network Hardware The Internet Network Topologies (Current) Encryption (Free) Standards and Network Protocols Network Connections

This teaches students about Local Area Networks LAN and Wide Area Networks WAN, as well as the role of computers in the Client-Server and Peer-to-Peer models. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, two worksheets with answers, custom exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Duration: 2-3 Lessons This resource is designed to cover: Local Area Networks and common examples. Wide Area Networks and common examples. Client-Server and Peer-to-Peer Network Model. Role of computers in the Client-Server and Peer-to-Peer models. ⠀ Other complete lessons in Unit 1.3: Types of Networks (Current) Network Performance Network Hardware The Internet Network Topologies Encryption (Free) Standards and Network Protocols Network Connections

This teaches students about lossy and lossless compression, along with the need for compression, and the effect on files. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Duration: 1 Lesson This resource is designed to cover: Why compression is used. Lossy and Lossless compression. Scenarios where each type of compression may be used. Advantages and disadvantages of each type of compression - there is a worksheet task designed for students to obtain this information from the presentation. Effects on different types of files. ⠀ Other complete lessons in Unit 1.2: RAM, ROM, and Virtual Memory (Primary Storage) Units of Storage Secondary Storage Binary Crash Course Representing Images Representing Sound Representing Characters Compression (Current)

This lesson is about units of data storage and is designed to teach students about bits and how units are used to simplify file sizes. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with an answer sheet, custom exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Duration: 1 Lesson This resource is designed to cover: Units of data storage. Moving between different data units. Calculating required storage capacity for files. Why data needs to be converted to binary format. ⠀ Other complete lessons in Unit 1.2: RAM, ROM, and Virtual Memory (Primary Storage) Units of Storage (Current) Secondary Storage Binary Crash Course Representing Images Representing Sound Representing Characters Compression

Secondary storage can be a difficult idea to get your head around, but this complete lesson is going to change that! It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a flashcards worksheet with answers, custom exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Duration: 2-3 Lessons This resource is designed to cover: The need for secondary storage. Common types of storage technology: optical, magnetic, solid-state/flash. Advantages and disadvantages of storage technology. Characteristics of secondary storage technology: cost, capacity, speed, portability, durability, reliability. ⠀ Other complete lessons in Unit 1.2: RAM, ROM, and Virtual Memory (Primary Storage) Units of Storage Secondary Storage (Current) Binary Crash Course Representing Images Representing Sound Representing Characters Compression

This lesson is about the Von Neumann Architecture and has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with an answer sheet, custom exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Please note that the knowledge of passing of data between registers during the FDE cycle is not required, however, I have found students generally understand the content far better if an animation of this process is shown. You can choose whether to keep or remove this animation in the presentation. Duration: 2-3 Lessons This resource is designed to cover: Common CPU components and their function: ALU, CU, cache, registers. Von Neumann architecture. Fetch-Decode-Execute cycle involving registers. ⠀ I hope you like this resource, other complete lessons in unit 1.1: Purpose of the CPU (Free) Von Neumann Architecture (Current) CPU Performance Embedded Systems (Free)

This is designed to teach how characters are represented using binary in computers, and character sets: ASCII, Extended ASCII and Unicode. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Duration: 1 Lesson This resource is designed to cover: How characters are represented using binary codes. Character sets: ASCII, Extended ASCII, Unicode. Character limit due to how many bits are used to represent a character. Logical order of characters in character sets. ⠀ Other complete lessons in Unit 1.2: RAM, ROM, and Virtual Memory (Primary Storage) Units of Storage Secondary Storage Binary Crash Course Representing Images Representing Sound Representing Characters (Current) Compression

This lesson is about primary storage, more specifically RAM, ROM, and Virtual Memory. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with an answer sheet, custom exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Please note that content about flash memory and cache is not included in this resource. Duration: 1-2 Lessons This resource is designed to cover: The need for Primary Storage. Purpose of RAM, ROM, and Virtual Memory. Differences between RAM and ROM, and their key characteristics. ⠀ Other complete lessons in Unit 1.2: RAM, ROM, and Virtual Memory (Primary Storage) (Current) Units of Storage Secondary Storage Binary Crash Course Representing Images Representing Sound Representing Characters Compression

This resource teaches students about the performance of computer networks - network latency, transmission errors, bandwidth, type of network traffic, and the number of connected devices. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom-made exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Duration: 1-2 Lessons This resource is designed to cover: Factors that affect the performance of a computer network: Network Latency Transmission Errors Bandwidth Type of Network Traffic Number of Connected Devices ⠀ Other complete lessons in Unit 1.3: Types of Networks Network Performance (Current) Network Hardware The Internet Network Topologies Encryption (Free) Standards and Network Protocols Network Connections

This lesson is about Embedded Systems and General-Purpose Computers and has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with an answer sheet, custom exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Duration: 1 Lesson This resource is designed to cover: Purpose and Characteristics of Embedded Systems Differences when compared with General-Purpose Computers. Wide range of Examples. ⠀ Other complete lessons in Unit 1.1: Purpose of the CPU (Free) Von Neumann Architecture CPU Performance Embedded Systems (Current - Free)

This lesson is about the Purpose of the CPU, or processor, inside the computer and has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with an answer sheet, custom exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Duration: 1 Lesson This lesson teaches students about: Input and Output Devices Hardware and Software Purpose of the CPU Fetch-Decode-Execute Cycle (This is briefly covered and sets the foundations to a complex content, it will be fully covered in the Von Neumann architecture lesson). ⠀ I hope you enjoy using this lesson as much as I enjoyed making it. Other complete lessons in Unit 1.1: Purpose of the CPU (Current - Free) Von Neumann Architecture CPU Performance Embedded Systems (Free)

This lesson teaches students about how and why encryption is used. It has been specially created for the OCR GCSE Computer Science (J277) course, meaning there is no irrelevant content from other exam boards. This resource consists of a PowerPoint presentation, a worksheet with answers, custom-made exam-styled questions with a mark scheme, and a full lesson plan. In addition, all documents can be edited with no restrictions. See the video and the preview image to see what is included! Feedback has been considered when creating and updating this resource to ensure it is appealing, engaging, and challenging. This resource will be updated regularly to ensure it is (one of) the best! Duration: 1 Lesson This resource is designed to cover: How encryption is used to secure data. ⠀ Other complete lessons in Unit 1.3: Types of Networks Network Performance Network Hardware The Internet Network Topologies Encryption (Current - Free) Standards and Network Protocols Network Connections