Menu
Topics

Revision notes

Memory & Storage

  1. Section 1MemoryPrimary Memory (RAM)Read Only Memory (ROM)Virtual Memory3 notes 6 min readStart reading
  2. Section 2StorageSecondary StorageTypes of Secondary StorageHard Disk Drives (HDDs)Magnetic TapeSolid State Storage8 notes 13 min readStart reading
  3. Section 3CompressionCompressionWhy files are compressedCompression for streaming and websitesEmail attachments and compressed foldersLossy compression7 notes 8 min readStart reading
  4. Section 4Character SetsCharacter SetsRepresenting and Displaying CharactersBits per Character and Character CapacityASCIIUnicode7 notes 8 min readStart reading
  5. Section 5ImagesBitmap ImagesColour DepthImage ResolutionComparing Colour Depth and ResolutionImage File Size7 notes 14 min readStart reading
  6. Section 6SoundSoundAnalog vs DigitalSamplingSample rateBit depth7 notes 10 min readStart reading
  7. Section 7Binary and Hexadecimal BasicsWhy Computers Use BinaryDenaryBinaryBits, Nibbles and BytesMost and Least Significant Bit7 notes 7 min readStart reading
  8. Section 8Binary to Denary ConversionConverting between Binary and DenaryPadding Binary NumbersChecking Binary to Denary Answers3 notes 6 min readStart reading
  9. Section 9Hexadecimal to Binary ConversionConverting between Binary and Hexadecimal1 note 2 min readStart reading
  10. Section 10Denary to Hexadecimal ConversionDenary to Hexadecimal by DivisionChecking a Denary to Hexadecimal ConversionDenary to Hexadecimal using Binary3 notes 6 min readStart reading
  11. Section 11Adding Binary NumbersAdding Binary NumbersChecking Binary AdditionBinary Overflow3 notes 6 min readStart reading
  12. Section 12Binary ShiftsBinary ShiftsShift Effects on ValueShift Overflow and Precision3 notes 5 min readStart reading
  13. Section 13Units and File SizesData Storage UnitsConverting Between UnitsText File SizeCapacity Calculations4 notes 5 min readStart reading
  14. Section 14Hexadecimal to Denary ConversionConverting Hexadecimal to Denary by Place ValueConverting Hexadecimal to Denary via BinaryComparing Hexadecimal to Denary Methods3 notes 5 min readStart reading