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Listed under:  Technologies
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Computing turns 60

  • TLF-IDM020833

This is a collection of eight articles that mark the 60th anniversary of the first computer in an Australian university. The series covers topics from the history of computing, its role in studying global health or species conservation, and how computers can help understand the brain.

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Video

What are pixels?

  • TLF-IDM020591

Meet Kevin Systrom and Piper Hanson as they explain how digital images work. What are pixels, those tiny dots of light, made from? How are colours created and represented? What does Kevin say about the way mathematical functions are used to create different image filters. What is the difference between image resolution ...

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Video

How is your personal information kept secret on the internet?

  • TLF-IDM020585

Lots of private data is exchanged over the internet. What are some examples? As Mia Epner explains, cryptography allows for the secure transfer of data online. How does encryption work? And what is a key? Today information is encrypted using 256 bit keys. This keeps information safe because it means there are way too many ...

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Video

How do computers get hacked?

  • TLF-IDM020582

What are some examples of cyber crime? Watch this clip to find out how viruses, denial of service attacks (DDoS) and phishing scams work. What is a botnet? And how are they used by hackers to bring down websites? Most of the time computers get hacked because of simple mistakes users make. What can users do to better protect ...

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Video

What are IP addresses?

  • TLF-IDM020592

Meet Vint Cerf, the co-creator of the internet! In this clip, Vint and software engineer Paola Mejia explore the way computer networks talk to each other. Find out what an IP address is and why it's similar to a street address. What's the domain name system? And how does your computer find out the IP address of a website ...

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