Jisho

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Noun
1. peripheral; peripheral device; accessory
Wikipedia definition
2. PeripheralA peripheral is a device connected to a host computer, but not part of it, and is more or less dependent on the host. These are also input/output devices. It expands the host's capabilities, but does not form part of the core computer architecture. There are three different types of peripherals: Input Output Storage An output peripheral is an external device that provides input and output for the computer. For example RAM has a peripheral output.
Read “Peripheral” on English Wikipedia
Read “周辺機器” on Japanese Wikipedia
Read “Peripheral” on DBpedia

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