What is the dominant pattern of development used in the text shown below?

A laptop is one of the greatest inventions of the modern era. It is a lightweight device that can save a vast amount of information. The screen, touchpad, speakers, keyboard, battery, and AC adapter are the basic parts of a laptop. The most noticeable part of a laptop is its screen which is responsible for displaying information. Another major component is the keyboard. On it are the keys needed to enter the data into the computer. Near the keyboard you will find a smooth, rectangular surface which acts like a desktop computer mouse – this is the touchpad. At the bottom part of this rectangular surface, you will see buttons that operate like a mouse button. Below the keyboard and touchpad, built into the laptop itself are the speakers which allow you to hear sounds and music. Found at the back of the keyboard is the battery; it serves as the lifeline of the computer. Finally a laptop also comes with an AC adapter which charges the battery and serves as the source of electric power when it is plugged in.