Software Updates
Apps and operating systems change after they ship. Updates fix mistakes, close security holes and sometimes add features you asked for.
- Explain software as instructions that can be replaced
- Give two good reasons schools install updates
- Describe what to do before a big update on a shared device
Finish first
Topic contents
Lesson 1 of 3
Hardware stays, software shifts
The metal and chips in your device change slowly. The instructions they run change often. Those instructions are software: apps, games, the operating system that manages everything.
When a company finds a bug or a security hole, it writes new instructions and sends an update. Your device copies the new version over the old one.
Watch the compare animation. See an old app version next to an updated one with a bug fix and a security patch.
Lesson 2 of 3
When to update at school
IT staff often schedule updates during holidays so lessons are not interrupted. On a personal tablet, install updates when you have power and Wi-Fi, not five minutes before class.
Back up important files first if the update is large. Most updates are safe, but saving work is always smart.
Never ignore security updates for long. They close doors that strangers could use to steal passwords.
Lesson 3 of 3
You finished the inside path
You travelled from single bits to gates, adders and a CPU cycle, then saw how software keeps changing on top of that hardware.
The internet path next shows how those machines talk across the world.
Remember: fast chips need good instructions. Updates are how instructions improve.
Practice
Work these out yourself
No answer key here on purpose: these are the questions worth thinking through before you move on. Open one and work it out.
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Check your understanding
Answer each question, then read the explanation. That is where the learning is.
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