Specification Objectives
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• understand that computers use the binary alphabet to represent all data and instructions
• understand the terms bit, nibble, byte, kilobyte, megabyte, gigabyte and terabyte
• understand that a binary code could represent different types of data such as text, image, sound, integer, date, real number
• understand how binary can be used to represent positive whole numbers (up to 255)
• understand how sound and bitmap images can be represented in binary
• understand how characters are represented in binary and be familiar with ASCII and its limitations
• understand why hexadecimal number representation is often used and know how to convert between binary, denary and hexadecimal.

​Keywords

• Bit depth
• Power
  
• Base 2
  
• Base 10
  
• Denary
  
• Binary
  
• Hexadecimal
  
• ​Conversion
  

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Independent Tasks

Download the below tasks in order - aim to attempt the core, challenge and super challenge tasks.

Task 1 - Denary and Binary

binary_and_denary.docx
File Size:	829 kb
File Type:	docx

Download File

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Task 2 - Hexadecimal

hex.docx
File Size:	830 kb
File Type:	docx

Download File

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Task 3 - Image Representation

image_representation.docx
File Size:	831 kb
File Type:	docx

Download File

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Task 4 - Sound Representation

sound_representation.docx
File Size:	1353 kb
File Type:	docx

Download File

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Plenary

Explain one thing you knew already and one thing you have learned today.

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Staff Resources