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Slide 1: Slide

ComputingLower Secondary (Key Stage 3)

This lesson contains 24 slides, with interactive quiz and text slides.

Items in this lesson

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Slide 1 - Slide

Slide 2 - Slide

What are the 3 missing words?

Extension

https://www.typing.com/en-gb/student/game/keyboard-jump

Slide 3 - Open question

Slide 4 - Slide

Slide 5 - Slide

Slide 6 - Slide

Slide 7 - Slide

How does a computer store the colour of a single pixel in an image?

Slide 8 - Slide

Slide 9 - Slide

Slide 10 - Slide

Slide 11 - Slide

Slide 12 - Slide

Slide 13 - Slide

Click here

Extension

https://www.csfieldguide.org.nz/en/interactives/colour-matcher/

Slide 14 - Slide

Slide 15 - Slide

Slide 16 - Slide

Converting bits to bytes

Slide 17 - Slide

Resolution = 800 x 500

Colour depth = 24 bits

800 X 500 = 400,000 pixels

500,000 pixels x 24 bits per pixel = 12,000,000 bits (12 megabits)

500,000 x 3 bytes per pixel = 1,500,000 (1.5 megabytes)

Slide 18 - Slide

Resolution = 500 x 400

Colour depth = 24 bits

Slide 19 - Slide

Slide 20 - Slide

resolution = 640 x 500 = 320,000 pixels

size = 320,000 pixels x 3 bytes per pixel

size = 960,000 bytes

960,000 bytes is 0.96 megabytes

Slide 21 - Slide

Slide 22 - Slide

Slide 23 - Slide

Slide 24 - Slide