Apps, Algorithms & Abstractions
summary
Starts from the everyday — a cat photo pinging on your phone — and traces hard numbers and hacks: radio uses 256 QAM across about 16 channels per device, JPEG compresses images by turning photos into 8×8 tiles and throwing away chroma data, storage relies on floating‑gate semiconductors (128 GB SD cards advertised for ~380 DKK), text encoding uses UTF‑8 multibyte sequences and Unicode codepoint U+1F408 for the ginger cat, and examples include the Rockstar language on codewithrostar.com.
AI-written summary · about
chapters (8)
- 0:00Intro
- 2:21An engineering miracle
- 4:41The telephone network
- 7:43The Internet
- 9:51Frequency, amplitude & phase modulation
- 22:52Image compression
- 30:15Text messaging
- 36:15Outro
