Here you will find easy to follow revision sheets which will help your students to recap the topic: 1.8 Ethical, legal, cultural and environmental concerns which includes: how to investigate and discuss Computer Science technologies while considering: ethical issues legal issues cultural issues environmental issues. privacy issues. how key stakeholders are affected by technologies environmental impact of Computer Science cultural implications of Computer Science open source vs proprietary software legislation relevant to Computer Science: The Data Protection Act 1998 Computer Misuse Act 1990 Copyright Designs and Patents Act 1988 Creative Commons Licensing Freedom of Information Act 2000 The revision sheets include exam questions at the end of each topic to help the students recap their revision and apply it to a question. Check out my shop to save on buying multiple sheets!! Enjoy!

Here you will find easy to follow revision sheets which will help your students to recap the topic: 2.6 Data Representation Units bit, nibble, byte, kilobyte, megabyte, gigabyte, terabyte, petabyte how data needs to be converted into a binary format to be processed by a computer. Numbers how to convert positive denary whole numbers (0–255) into 8 bit binary numbers and vice versa how to add two 8 bit binary integers and explain overflow errors which may occur binary shifts how to convert positive denary whole numbers (0–255) into 2 digit hexadecimal numbers and vice versa how to convert from binary to hexadecimal equivalents and vice versa check digits. Characters the use of binary codes to represent characters the term ‘character-set’ the relationship between the number of bits per character in a character set and the number of characters which can be represented (for example ASCII, extended ASCII and Unicode). Images how an image is represented as a series of pixels represented in binary metadata included in the file the effect of colour depth and resolution on the size of an image file. Sound how sound can be sampled and stored in digital form how sampling intervals and other factors affect the size of a sound file and the quality of its playback: sample size bit rate sampling frequency. Compression need for compression types of compression: lossy lossless. The revision sheets include exam questions at the end of each topic to help the students recap their revision and apply it to a question. Check out my shop to save on buying multiple sheets!! Enjoy!

Here you will find easy to follow revision sheets which will help your students to recap the topic: 1.4 Wired and Wireless Networks which includes: types of networks: LAN (Local Area Network) WAN (Wide Area Network) factors that affect the performance of networks the different roles of computers in a client-server and a peer-to-peer network the hardware needed to connect stand-alone computers into a Local Area Network: wireless access points routers/switches NIC (Network Interface Controller/Card) transmission media the internet as a worldwide collection of computer networks: DNS (Domain Name Server) hosting the cloud the concept of virtual networks The revision sheets include exam questions at the end of each topic to help the students recap their revision and apply it to a question. Check out my shop to save on buying multiple sheets!! Enjoy!

Here you will find easy to follow revision sheets which will help your students to recap the topic: 2.3 Producing Robust Programs defensive design considerations: input sanitisation/validation planning for contingencies anticipating misuse authentication maintainability: comments indentation the purpose of testing types of testing: iterative final/terminal how to identify syntax and logic errors selecting and using suitable test data. The revision sheets include exam questions at the end of each topic to help the students recap their revision and apply it to a question. Check out my shop to save on buying multiple sheets!! Enjoy!

Here you will find easy to follow revision sheets which will help your students to recap the topic: 2.4 Computational logic: why data is represented in computer systems in binary form simple logic diagrams using the operations AND, OR and NOT truth tables combining Boolean operators using AND, OR and NOT to two levels applying logical operators in appropriate truth tables to solve problems applying computing-related mathematics: – / Exponentiation (^) MOD DIV The revision sheets include exam questions at the end of each topic to help the students recap their revision and apply it to a question. Check out my shop to save on buying multiple sheets!! Enjoy!

Here you will find easy to follow revision sheets which will help your students to recap the topic: 1.2 Memory which includes: the difference between RAM and ROM the purpose of ROM in a computer system the purpose of RAM in a computer system the need for virtual memory flash memory. The revision sheets include exam questions at the end of each topic to help the students recap their revision and apply it to a question. Check out my shop to save on buying multiple sheets!! Enjoy!

Here you will find easy to follow revision sheets which will help your students to recap the topic: 1.5 Network topologies, protocols and layers which includes: star and mesh network topologies Wifi: frequency and channels encryption ethernet the uses of IP addressing, MAC addressing, and protocols including: TCP/IP (Transmission Control Protocol/Internet Protocol) HTTP (Hyper Text Transfer Protocol) HTTPS (Hyper Text Transfer Protocol Secure) FTP (File Transfer Protocol) POP (Post Office Protocol) IMAP (Internet Message Access Protocol) SMTP (Simple Mail Transfer Protocol) the concept of layers packet switching. The revision sheets include exam questions at the end of each topic to help the students recap their revision and apply it to a question. Check out my shop to save on buying multiple sheets!! Enjoy!

Here you will find easy to follow revision sheets which will help your students to recap the topic: 1.6 Systems Security which includes: forms of attack threats posed to networks: malware phishing people as the ‘weak point’ in secure systems (social engineering) brute force attacks denial of service attacks data interception and theft the concept of SQL injection poor network policy identifying and preventing vulnerabilities: penetration testing network forensics network policies anti-malware software firewalls user access levels passwords encryption. The revision sheets include exam questions at the end of each topic to help the students recap their revision and apply it to a question. Check out my shop to save on buying multiple sheets!! Enjoy!

Here you will find easy to follow revision sheets which will help your students to recap the topic: 1.7 Systems Software which includes: the purpose and functionality of systems software operating systems: user interface memory management/multitasking peripheral management and drivers user management file management utility system software: encryption software defragmentation data compression the role and methods of backup: full incremental. The revision sheets include exam questions at the end of each topic to help the students recap their revision and apply it to a question. Check out my shop to save on buying multiple sheets!! Enjoy!

Here you will find easy to follow revision sheets which will help your students to recap the topic: 2.5 Translators and facilities of languages characteristics and purpose of different levels of programming language, including low level languages the purpose of translators the characteristics of an assembler, a compiler and an interpreter common tools and facilities available in an integrated development environment (IDE): editors error diagnostics run-time environment translators. The revision sheets include exam questions at the end of each topic to help the students recap their revision and apply it to a question. Check out my shop to save on buying multiple sheets!! Enjoy!

A mock exam and mapped mark scheme that was used to test students knowledge and abilities on the A451 Computer Science topics. Test is made up of previous questions all of which are mapped out. Examination Board: OCR

An easy to follow worksheet designed to revisit calculating file sizes as part of 1.3 Storage in the Computer Systems component. The worksheet s designed for students to read over their notes, and attempt the questions, Answer sheet is included. Has been found useful for mock papers with the students in the past ** Answers are included for teachers who are new to the subject

Here you will find easy to follow revision sheets which will help your students to recap the topics in 2.1 Growing The Business, these include: 2.1.1. Business Growth 2.1.2. Changes In Business Aims And Objectives 2.1.3 Business and Globalisation 2.1.4 Ethics, Environment & Business Attached at the end of the notes are revision questions which the students should be able to answer once they have studied the topic. Enjoy!

Here you will find easy to follow revision sheets which will help your students to recap the topics in 2.2 Making Marketing Decisions, these include: 2.2.1 Product 2.2.2 Price 2.2.3 Promotion 2.2.4 Place 2.2.5. Using the marketing mix to make business decisions Attached at the end of the notes are revision questions which the students should be able to answer once they have studied the topic. Enjoy!

Here you will find easy to follow revision sheets which will help your students to recap the topics in 2.3 Making Operational Decisions, these include: 2.3.1 Business Operations 2.3.2 Working With Suppliers 2.3.3 Managing Quality 2.3.4 The Sales Process Attached at the end of the notes are revision questions which the students should be able to answer once they have studied the topic. Enjoy! Also check out the other revision sheets for the topics within this GCSE in my shop!

Here you will find easy to follow revision sheets which will help your students to recap the topics in 2.4 Making Financial Decisions, these include: 2.4.1 Business Calculations 2.4.2. Understanding Business Performance Attached at the end of the notes are revision questions which the students should be able to answer once they have studied the topic. Enjoy! Also check out the other revision sheets for the topics within this GCSE in my shop!

Here you will find easy to follow revision sheets which will help your students to recap the topics in 2.5 Making Human Resource Decisions, these include: 2.5.1 Organisational Structures 2.5.2 Effective Recruitment 2.5.3. Effective Training & Development 2.5.4. Motivation Attached at the end of the notes are revision questions which the students should be able to answer once they have studied the topic. Enjoy! Also check out the other revision sheets for the topics within this GCSE in my shop!

Here you will find easy to follow revision sheets which will help your students to recap the topics in 1.1 Enterprise and Entrepreneurship, these include: -1.1.1 The dynamic nature of business -1.1.2 Risk and reward -1.1.3 The role of business enterprise Attached at the end of the notes are revision questions which the students should be able to answer once they have studied the topic. Enjoy!

Here you will find easy to follow revision sheets which will help your students to recap the topics in 1.4 Making The Business Effective, these include: 1.4.1. The Options For Start Up & Small Business 1.4.2 Business Location 1.4.3 The Marketing Mix 1.4.4. Business Plans Attached at the end of the notes are revision questions which the students should be able to answer once they have studied the topic. Enjoy!

Here you will find easy to follow revision sheets which will help your students to recap the topics in 1.5 Understanding External Influences On Business, these include: 1.5.1. Business Stakeholders 1.5.2. Technology & Business 1.5.3. Legislation & Business 1.5.4. The Economy & Business 1.5.5 External Influences Attached at the end of the notes are revision questions which the students should be able to answer once they have studied the topic. Enjoy!