Do USB Keyboards Only Send Signals or Do They Receive Them Too?

Most of us never give much thought to our keyboards as long as they work well, but if you stop to think about it for a moment, do they only send signals to our computers or is there an active back-and-forth process at work? Today’s SuperUser Q&A post has the answer to a curious reader’s question.

Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-driven grouping of Q&A web sites.

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The Question

SuperUser reader Ne Mo wants to know if USB keyboards only send signals or if they receive them too:

A USB keyboard does not need to receive any signals from a computer, just power, right? Or does it need to receive signals as well as send them?

Do USB keyboards only send signals or do they receive them too?

The Answer

SuperUser contributors LawrenceC and Dmitry Grigoryev have the answer for us. First up, LawrenceC:

From the…

Sasha Harriet

Sasha Harriet

As content editor, I get to do what I love everyday. Tweet, share and promote the best content our tools find on a daily basis.

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Sasha Harriet

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