Suggestion: Remove the reference to "one byte of storage" since UTF-8 and Unicode can involve multiple bytes.
Instead, consider changing the first sentence to "In computer software, a character is a symbol, such as a letter or number, that represents information." Source
https://github.com/StyleGuides/WritingStyleGuide/blob/1604485f16a472b329a43551ba561ecd8b7416c4/en-US/C.xml#L98
Suggestion: Remove the reference to "one byte of storage" since UTF-8 and Unicode can involve multiple bytes.
Instead, consider changing the first sentence to "In computer software, a character is a symbol, such as a letter or number, that represents information." Source