Write-back cache is a caching technique common in most processor architectures since Intel 80486. When required, it copies data to higher level caches, backing store or memory. Write-back cache is also known as write-behind cache and copy-back cache.
A peripheral device is an internal or external device that connects directly to a computer but does not contribute to the computer's primary function, such as computing. It helps end users access and use the functionalities of a computer.
Peripheral devices include the following:
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