A peripheral (pronounced peh-RIHF-uh-ruhl, a noun truncation of peripheral device) is any computer device that is not part of the essential computer (the processor, memory, and data paths) but is situated relatively close by. A near synonym is input/output (I/O) device. Some peripherals are mounted in the same case with the main part of the computer, as are the hard disk drive, CD-ROM drive, and NIC. Other peripherals are outside the computer case, such as the printer and image scanner, attached by a wired or wireless connection.
Dig Deeper on Network Administration
Related Q&A from Amy Kucharik
Learn what network latency is in this expert response. Continue Reading
Learn what the true definition of a download is and whether going from one Web site to another falls under this category in this Q&A with Amy ... Continue Reading
In this Q&A with Amy Kucharik, learn what the difference is between a patch and a service pack. Continue Reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.