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Articles on Computing

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A digital twin attempts to capture every aspect of a real thing, including up-to-the-moment changes. lambada/E+ via Getty Images

What are digital twins? A pair of computer modeling experts explain

A digital twin is to a computer model as live video is to a still photo. These virtual replicas can be used to understand and make predictions about a wide range of complex systems, including people.
Finding the best tour from A through B, C and D and back to A might not be that hard, but adding a few more destinations could give you a headache. wundervisuals/E+ via Getty Images

Planning the best route with multiple destinations is hard even for supercomputers – a new approach breaks a barrier that’s stood for nearly half a century

The traveling salesperson problem is so difficult that practical solutions can never be perfect – only good enough. The challenge is coming up with the best approximations.
Computer algorithms can involve complicated math, but the concept of an algorithm is simple. Hill Street Studios/DigitalVision via Getty Images

What is an algorithm? How computers know what to do with data

A close look at how you decide what clothes to put on in the morning can help you understand how computers work.

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