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    • 01 Random topics
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data

PLEASE READ: All of the tests below self mark, tell you your mark as a percentage and show you what the correct answer is. They also offer light hearted feedback about your progress. If you are easily offended with any of the feedback then feel free to use a different website (or stop being so sensitive). Ultimately at the very least, we want you to achieve your target grade and at the very most, we want you to be the next Steve Jobs, Bill Gates or Sophie Wilson. Enough talk, lets see what you got...Goodluck!

Self-test


​01 - Random topics

​02 - Programming

​03 - Data

​04 - Computers

​05 - Comms & net

​06 - Bigger picture

​07 - Paper 2

Self-test Binary

Loading Binary

4-bit Two's complement (Denary to binary)

Loading 4-bit Two's complement (Denary to binary)

Loading 4-bit Two's compliment (Binary to denary)

8-bit Two's complement

Loading 8-bit Two's complement

Self-test Twos compliment

Loading Binary - Twos compliment

Self-test Sign and magnitude

Loading Binary - Sign and magnitude

Self-test Hexadecimal

Loading Hexadecimal

Hexadecimal to denary

Loading Hexadecimal to denary

Hexadecimal above F

Loading Hexadecimal above F

Binary addition

Loading Binary addition

Binary overflow

Loading Binary overflow

Signed/unsigned integers

Loading Signed/unsigned integers

Logical shifts (Multiply)

Loading Logical shifts (Multiply)

Logical shift (Divide)

Loading Logical shift (Divide)

Arithmetic shift (multiply, positive number)

Loading Arithmetic shift (multiply, positive number)

Arithmetic shift (multiply, negative number)

Loading Arithmetic shift (multiply, negative number)

Arithmetic shift (divide, negative numbers)

Loading Arithmetic shift (divide, negative numbers)

Arithmetic shift (divide, positive numbers)

Loading Arithmetic shift (divide, positive numbers)

Self-test ASCII

Loading ASCII

Self-test Data representation - images

Loading Data representation - Images

Self-test Data representation - sound

Loading Data representation - sound

Self-test Database introduction

Loading Database Introduction

Self-test Relational databases

Loading Database - Relational databases

Self-test File sizes 1

Loading File sizes1

Self-test File sizes 2

Loading File sizes2

Self-test Data transfer speeds 1

Loading Data transfer speeds1

Self-test Data transfer speeds 2

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  • Edexcel GCSE CS
    • 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 >
      • Help with Python >
        • Finding python
        • Python coding >
          • Comments
          • Data types
          • Variables
          • If Else
          • If Elif Else
          • Functions
          • For loop
          • While loop
          • Data structures >
            • Looping thru 2D array
          • String slicing/indexing
          • user defined function
          • Local/global variable
          • Validation and try
          • methods
          • File I/O
          • Pseudocode
          • Modules >
            • Turtle
          • Classes
          • NEA/Projects
        • Python questions
  • KS3/Other
    • KS3 >
      • E-Safety >
        • E-Safety intro
        • Screen time
        • E-Safety questions
      • Hardware >
        • All Hardware
        • Magnetic hard disk drive
        • Optical disk drive
        • Solid state drive
      • Software
      • Binary/Hex/Algorithms >
        • Binary
        • Hexadecimal - 1 digit
        • Hexadecimal - 2 digits
        • Algorithms
        • ASCII
        • Tests
      • Networks
      • Protocols/Cyber attacks
      • Scratch
      • Logic >
        • CPU
        • AND gate
        • OR gate
        • NOT gate
        • Logical statements
      • Python >
        • Getting started
        • Functions
        • Variables
        • VariablesToo
        • inputs
        • Selection
        • Flowcharts
        • Data types
        • Pseudocode1
        • Pseudocode2
        • Subprogram1
        • Subprogram2
        • Coding challenges
      • HTML
    • BTEC CS
    • OCR GCSE CS >
      • Past paper JUNE 2015
      • Past paper June 2014
      • Past paper MAY 2012
      • Past paper JAN 2011
      • Past paper JUN 2011
    • AQA AS-Level CS >
      • AS Curriculum >
        • Multiple choice questions
    • Business studies >
      • Keywords
      • BS Revision - Multiple choice
      • Paper 1 (9-1)
      • Paper 2 (9-1)
  • Contact/More
    • Code editor
    • Contact us
    • upload
    • Microbit ideas
    • More
  • Self test
    • 01 Random topics
    • 02 Programming
    • 03 Data
    • 04 Computers
    • 05 Communication and the internet
    • 06 The bigger picture
    • 07 Paper 2