The American Library Association's digital-literacy task force defines digital literacy as "the ability to use information and communication technologies to find, evaluate, create, and communicate information, requiring both cognitive and technical skills."
More simply, Hiller Spires (North Carolina State University) describes digital literacy as having three parts:
Source: Heitin, L. (2016). What Is Digital Literacy? Digital Literacy: An Evolving Definition. Education Week, (12).