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      • 1 - Solving Problems
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      • 1. Design of Solution
      • 2. Solution Development
      • 3. Programming Techniques
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      • Data Representation
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  • Home
  • Y9
    • Unit 1 - Introduction
    • Unit 2 - Text Adventure
  • Y10
    • Term 1 >
      • Introduction
      • 1 - Solving Problems
      • 2 - IPO
      • 3 - Strings
      • 4 - Flowcharts
  • Y11
    • Coursework >
      • 1. Design of Solution
      • 2. Solution Development
      • 3. Programming Techniques
      • 4. Evaluation & Testing
      • Exemplars
      • Literacy Support
    • Theory >
      • Data Representation
      • Networks
      • SDLC
      • SQL

Data Representation

Specification Objectives
​
  • 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

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

Task 2 - Hexadecimal

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

Task 3 - Image Representation

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

Task 4 - Sound Representation

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


Plenary

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

Staff Resources