Learning paths / Digital Media
Pictures, Sound and Files
RGB grids, wave samples and smaller files.
Six topics on how media becomes numbers: pixels, mixing RGB light, resolution, sampling sound, video as frames, and why compression shrinks files.
Class 9 to 106 topicsbeginnerabout 1h 45m
0 of 6 topics complete0%
What you will be able to do
- Read and write RGB triplets for a colour
- Explain resolution as a grid of pixels
- Describe sound as samples over time
- Give a plain reason compression makes files smaller
Topic sequence
Follow it in order. Each topic assumes the one before it.
01Pictures Are NumbersbeginnerClass 9 to 10animated labA digital photo is a grid of pixels. Each pixel stores numbers for red, green and blue brightness.18 min02Mixing Light ColoursbeginnerClass 9 to 10animated labScreens mix red, green and blue light. Paint mixes differently on paper. Know which world you are in.16 min03Screens and ResolutionbeginnerClass 9 to 10animated labResolution counts pixels across and down. More pixels in the same space look sharper; stretching fewer pixels looks blocky.18 min04How Sound Is StoredbeginnerClass 9 to 10animated labMicrophones sample air pressure many times per second. Each sample is a number, and playing them back rebuilds the wave.18 min05Video Is Many PhotosbeginnerClass 9 to 10Video is a flipbook of still frames plus sound. Frames per second tells you how smooth motion looks.17 min06Smaller FilesbeginnerClass 9 to 10Compression packs data into fewer bytes. Some methods shrink files without changing what you notice; others trade quality for size.18 min
How this path closes
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Project
Apply the whole sequence to one build.
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Assessment
Quizzes across every topic in the path.
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Requirements met
Every topic complete and an average of at least 70% across the quizzes.
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Pictures, Sound and Files
Your CodexLab Path Certificate, issued the moment you qualify.
Finishing this path earns the Pictures, Sound and Files certificate, awarded by CodexLab. See the requirements and your progress.