Read the passage and fill in the blanks with the suitable words.

Most people think of computers as very modern inventions, products of our new technological. But actually the idea for a computer (1) worked out overtwo centuries ago by a man (2) Charles Babbage.

Babbage was born (3) 1791 and grew up to be a brilliant mathematician. He drew up plans for several calculating machines (4) he called “engines”. But despite the fact that he (5) building some of these he never finished any of them. Over the years people have argued (6) his machines would ever work. Recently, however, the Science Museum in London has finished building (7) engine based on one of Babbages designs. (8) has taken six years to complete and more (9) four thousand parts have been specially made. Whether it works or not, the machine will be on show at a special exhibition in the Science Museum (10) remind people of Babbages work