Laptops are a [?] of personal computer [?] you can use anywhere. They are also known as a notebook computer, for [?] the IBM Thinkpad. Laptops usually weigh between one and three kilograms, [?] they are easy to carry around. These computers can run on batteries, [?] they can also use main electricity. Laptops are becoming very popular [?] they are cheaper than before. You can use them in different places, [?] libraries, canteens, on a train, or even in the street. They are useful for businessmen and women, and also for students.