Computer

From lectures by Stephen Hawking to the letters of British politician Neil Kinnock – it's a race against time to save the historical treasures locked away on old floppy disks.

In Taiwan they call @ "little mouse". It's "strudel" in Hebrew, "dog" in Russian and "monkey's tail" in Dutch. The @ sign is a mirror, and its story goes back thousands of years.

They are televisions from another era, replaced by the flat screen, high-resolution displays of the modern era. Yet cathode-ray tubes are still surprisingly in demand.

As technology marches on, some people get trapped using decades-old software and devices. Here's a look inside the strange, stubborn world of obsolete Windows machines.

Celebrating his 45th birthday this year, the yellow eating machine revolutionised video games – and has even been used in science. What has made him and his adventures so addictive?

On 29 October 1969, two scientists established a connection between computers some 350 miles away and started typing a message. Halfway through, it crashed.

Our world runs on randomly generated numbers and without them a surprising proportion of modern life would break down. So, why are they so hard to find?