Computer Science
GCSEOCR

GCSE Computer Science Revision

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Prepare for the OCR GCSE Computer Science J277 exam with Revision Genie. Revise the full OCR J277 specification, practise exam-style questions for Paper 1 (Computer Systems) and Paper 2 (Algorithms & Programming), and get instant step-by-step help to boost confidence and marks.

Exam Questions

CPU ArchitectureNew
CPU PerformanceNew
Embedded SystemsNew
Memory & StorageNew
Data RepresentationNew
NetworksNew
System SecurityNew
Systems SoftwareNew
Extended DiscussionNew
Primary StorageNew
Secondary StorageNew
Data Units and CapacityNew
Storage DevicesNew
Types of storage and characteristicsNew
RAM, ROM, and their usesNew
RAM and ROMNew
Number BasesNew
CharactersNew
ImagesNew
SoundNew
CompressionNew
Binary ArithmeticNew
Character EncodingNew
Binary calculations and shiftsNew
Binary numbersNew
Text representation (ASCII)New
Character setsNew
Network TypesNew
Network Performance FactorsNew
Network ModelsNew
Network HardwareNew
Internet and Network ServicesNew
Network TopologiesNew
Wired and Wireless ConnectionsNew
Addressing and StandardsNew
Network ProtocolsNew
Protocol LayersNew
Cloud storageNew
Threats and AttacksNew
Preventing VulnerabilitiesNew
Operating SystemsNew
Utility SoftwareNew
Impacts of Digital TechnologyNew
LegislationNew
Software LicensingNew
Computational ThinkingNew
Algorithm Design and RepresentationNew
Searching AlgorithmsNew
Sorting AlgorithmsNew
FlowchartsNew
Core Programming ConceptsNew
OperatorsNew
Control FlowNew
Data TypesNew
Additional Programming TechniquesNew
Defensive DesignNew
Testing and RefinementNew
Logic GatesNew
Truth TablesNew
Logic DiagramsNew
Programming Language LevelsNew
TranslatorsNew
Integrated Development EnvironmentsNew
Characteristics and ExamplesNew
Advantages and DisadvantagesNew
Technological AdvancementsNew
The purpose of the CPU and components of the CPUNew
Threats and PreventionNew
Technology in SocietyNew
Technology and the environmentNew
WAN and cloud advantages/disadvantagesNew
Programming constructsNew
Error typesNew
String manipulationNew
High-level and low-level languagesNew
Robust and secure programmingNew
Subprograms and algorithmsNew
Testing and evaluationNew
ErrorsNew
Maintainability and functionsNew
Subprograms (functions and procedures)New
Abstraction and decompositionNew
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