Simple past tense and past participle of digitize.(verb)
That has been converted from analog to digital(adjective)
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Use "digitized" in a sentence
"Because the content that was digitized is primarily text, it was probably less costly than digitizing images or audio."
"Users can access some of the material and purchase full copies of certain digitized items."
"However, there little detail on the digitization process itself - a pity, as many of the items digitized are obviously fragile, and the process by which these were digitized is likely useful to know about."