People still use abacuses today in many parts of the world.
Abacuses answer difficult maths questions much slower than a human can.
Who was the first computer programmer?
Was Alan Turing well known when he was alive?
One of the worst problems is computer viruses.
His ideas on computer science changed the world
Whose idea was a modern computer?
What was called Colossus?
Colassus was as big as ...
You can lose a lot of information when one gets on your machine.
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