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Digital Text Image Representation
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Digital Text Image Representation
📚 Part 1: ASCII Text Encoding
1. What does ASCII stand for?
Australian Standard Code for Information Interchange
American Standard Code for Information Interchange
Automatic System Code for Internet Information
Advanced Standard Computer Information Index
2. Using the ASCII table provided by your teacher, decode this binary message:
01001000 01100101 01101100 01101100 01101111
The message says: ________________________
3. Now encode your first name using ASCII binary code:
4. Why is ASCII important for computers?
It makes computers run faster
It allows computers to represent text using numbers
It reduces the size of computer files
It makes screens brighter
🎨 Part 2: Digital Image Representation
5. What is a pixel?
6. Design a simple 8×8 pixel art image in the grid below. Colour in squares to create your design:
7. Which image would have a larger file size?
A 100×100 pixel photo
A 1000×1000 pixel photo
They would be the same size
8. What happens to image quality when resolution increases? Tick all that apply:
Images become clearer
More detail is visible
File size increases
Images load faster
🤔 Part 3: Application & Reflection
9. Explain why a photographer might choose different resolutions for different purposes:
10. Compare how text and images are stored differently in computers:
Extension Challenge: Research and write about one other character encoding system besides ASCII:
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