The history of computers

People still use abacuses today in many parts of the world.

Abacuses answer difficult maths questions much slower than a human can.

In 1800, a group of people diving near the Greek island of Antikythera found this machine on the sea floor.

Ada Lovelace was the first computer programmer.

Alan Turing was well known when he was alive.

One of the worst problems is computer viruses.