Peripheral
N/A
外围设备
Peripheral · N/A · 外围设备 · puh-RIF-uh-rul · external device · accessory device · Hardware · devices · basics · everydayHardwareexternal device accessory device/puh-RIF-uh-rul/
Also known as: external device, accessory device
Last updated August 9, 2026
Definition
A peripheral is an external device connected to a computer — keyboard, mouse, printer, webcam, or external drive.
Real-World Example
Plugging in a USB mouse adds a peripheral without opening the computer case.
References
Related terms
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