Okay kiddo, so let's talk about how computers got smaller and more portable over time.
First, way back in the 1970s, people used big, clunky computers that had to stay in one place. They were really powerful, but you couldn't take them with you if you wanted to work from a different location.
Then, in the early 1980s, a company called Compaq came along and made the first really portable computer that was also powerful enough to do real work. It was called the Compaq Portable, and it weighed about 30 pounds - which is still pretty heavy!
Over the next few years, other companies started making their own portable computers, but they were still pretty bulky and expensive. They were also not very powerful, so they were mostly used for simple tasks like word processing.
Then, in the late 1980s and early 1990s, things really started to change. Companies like Apple and IBM began making more powerful and less expensive portable computers that were also much lighter and easier to carry around. These were called laptops, and they quickly became very popular.
As technology continued to improve, laptops became even more powerful and even smaller. By the early 2000s, some laptops were as thin and light as a few sheets of paper! Nowadays, there are even smaller and more portable devices like tablets and smartphones that can do many of the same things as a traditional laptop.
So, to sum up: computers used to be big and clunky, but over time they got smaller and more portable, until we now have devices that can fit in our pockets!