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  • Exam boards
    • OCR past papers >
      • Paper 1 J277 >
        • Paper1 (Sample) J277
        • Practice paper1 J277
      • Paper 2 J277 >
        • Paper 2 J277 Practice
    • Edexcel past papers >
      • 2020 Current spec (coming soon) >
        • Programming Language Subset (PLS)
      • Old 2016 SPEC >
        • Paper 1 (specimen1)
        • Paper 1 (specimen2)
        • Paper 1 (2018)
        • Paper 1 (2019)
        • Paper 2 (specimen1)
        • Paper 2 (2018)
        • Paper 2 (2019)
      • OLD 2013 SPEC >
        • Sample assessment 1 (old spec)
        • Sample assessment 2 (old spec)
        • June 2017 (old spec)
        • June 2016 (old spec)
        • June 2015 (old spec)
    • Paper 1 (by topic) >
      • Algorithms
      • Application software
      • Ascii
      • Binary
      • Cache
      • Client Server
      • Cloud
      • Compression
      • Computational thinking
      • CPU
      • Cyber security
      • Database
      • Fetch decode execute cycle
      • Embedded system
      • Encryption
      • File size
      • Flow chart
      • Hexadecimal
      • High Level language
      • ISP/Internet
      • Logic
      • Magnetic HDD
      • Networking
      • Open source
      • Operating system
      • Peer to peer
      • Images (Data representation)
      • Protocols
      • RAM
      • ROM
      • Run length encoding
      • Simulation software
      • Solid state HDD
      • Sound
      • Stored program concept
      • Utility software
    • Curriculum >
      • Binary
      • Hex
      • Data Representation
      • Compression
      • Encryption
      • What is a computer
      • How does a computer work
      • Hardware
      • Operating system
      • The CPU
      • Input devices
      • Data storage
      • Networks
      • Microcontrollers
      • Computational models
      • Emerging trends
      • Virtual machine
      • Models and simulators
      • Algorithms
    • Python >
      • Finding python
      • GCSE Python questions
      • Python coding >
        • Comments
        • Data types
        • Variables
        • If Else (Selection)
        • If Elif Else (Selection) >
          • Relational/Comparison Operator challenges
          • Selection challenges
        • Functions
        • For loop (iteration)
        • While loop (iteration) >
          • While loop challenges
        • Data structures >
          • Array challenges
          • 2D Array challenges
          • Looping thru 2D array
        • String slicing/indexing >
          • String slicing challenges
        • Subprograms >
          • Subprogram challenges
        • Local/global variable
        • Validation and try
        • methods
        • File I/O >
          • Files - Challenges
        • Pseudocode
        • Modules >
          • Turtle
        • Classes
        • NEA/Projects
  • KS3/Other
    • KS3 >
      • Coding >
        • GameMaker
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          • HTML tags
        • Scratch >
          • Scratch questions
        • Python >
          • Getting started
          • Functions
          • Variables
          • VariablesToo
          • inputs
          • Selection
          • Flowcharts
          • Data types
          • Pseudocode1
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          • Subprogram1
          • Subprogram2
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      • Online Safety >
        • Screen time
        • Online Safety questions
      • IT >
        • Word
        • PowerPoint
      • Hardware >
        • All Hardware
        • Magnetic hard disk drive
        • Optical disk drive
        • Solid state drive
      • Logic >
        • CPU
        • AND gate
        • OR gate
        • NOT gate
        • Logical statements
      • Software
      • Binary/Hex/Algorithms >
        • Binary
        • Binary explained
        • Hexadecimal - 1 digit
        • Hexadecimal - 2 digits
        • Algorithms
        • ASCII
      • Networks
      • Protocols/Cyber attacks
    • BTEC CS
    • OCR A-Level >
      • 1.2 (Unit 2) >
        • Functions of an OS
        • Types of OS
        • Application generation
      • 1.2 (Unit 3) >
        • Software development
        • Algorithms
        • Programming paradigms
      • 1.3 (Unit 5) >
        • Networks
      • 1.5 (Unit 9) >
        • Laws and Acts
      • 2.3 (Unit 12) >
        • Analysis and design of algorithms
    • AQA AS-Level CS >
      • AS Curriculum >
        • Multiple choice questions
    • Business studies >
      • Keywords
      • BS Revision - Multiple choice
      • Paper 1 (9-1)
      • Paper 2 (9-1)
    • Junior Science >
      • 01 - Particles >
        • investigations and data
        • Equipment
        • Particles
      • 02 - Cells >
        • Microscope introduced
        • Looking at cells
        • Specialised cells
        • Unicellular organisms
      • 03 - Energy >
        • Energy introduced
        • Energy transfers
        • Conduction, Convection, Insulators
      • 04 - Chemical ideas & reactions >
        • Periodic table
        • Chemical reactions
        • Chemical reactions2
      • 05 - Light and Sound >
        • Light introduced
        • The Eye
        • Colours and filters
        • Waves and Sound
  • Contact/More
    • Code editor
    • Contact us
    • Microbit ideas
    • More
  • Self test
    • 01 Random topics
    • 02 Programming
    • 03 Data
    • 04 Computers
    • 05 Networks
    • 06 Legal/Ethics/Enviro'
    • Coding/Programming