Tech WondersPlay

Zone 29

Retro Terminal

Nine lessons of about three minutes each, every one with a live demo and a quick test.

  • Computing History & Legendary Bugs×2
  • The Internet & Web
  • Security & Scams
  • Quantum & Relativity
  • Energy, Heat & Motion
  • Inside the Computer
  • How Data Travels
  • Images, Screens & Games
Play this zone
  1. 253Attention DesignThe Red DotA tiny badge turns an unfinished task into an itch
  2. 254Protocol SecurityWhy Car Keys Never Repeat ThemselvesEach press of your fob sends a code that will never work again
  3. 255Atomic PhysicsYou've Never Touched AnythingElectrons push back before atoms ever meet
  4. 256Physical ChemistryWhy Pasta Cooks Slowly on EverestWater boils at a lower temperature when the air is thin
  5. 257Space ComputingThe Computer That Flew to the MoonApollo's guidance computer had about 4 KB of working memory
  6. 258Space ComputingApollo's 1202 AlarmMinutes before landing on the Moon, the computer started flashing errors
  7. 259Concurrent ComputingThe Race ConditionCorrect steps can go wrong when they happen at the same moment
  8. 260Cellular NetworksWhy It's Called a Cell PhoneThe land is divided into ‘cells’ that reuse the same radio frequencies
  9. 261Display TechnologyDark Mode Saves Battery, SometimesOn OLED screens black pixels are switched off