Computer data unit (4)
I believe the answer is:
byte
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">computer data unit</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for byte that I've seen before include "Very little info" , "Computer space storage unit" , "Computer memory unit of eight bits" , "Computing unit" , "Unit of computer memory size" .)