Cách sử dụng
The word 'peripheral' is often used when we talk about things that are on the outer edges or not as important as the main thing. For example, when talking about a computer, the keyboard, mouse, and printer are peripheral devices because they are not as important as the main component which is the computer itself. In general, peripheral refers to things that are around or to the side of something else, and are not essential to the main thing.