Circle 5 sentences relevant to the text there are 3 extra sentences 1.Microchips helped make computer smaller.
2.The first computer weighed 30 tons.
3.The computers used to be very big.
4.Microchips are very small.
5.Computers are used everywhere.
6.People didn’t have computers at home.
7.The first PC appeared in 1981.
8.There are over one billion PCs in the world.

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