Computing bores rarely represented in books (8)
I believe the answer is:
literary
'in books' is the definition.
(I've seen this before)
'computing bores rarely represented' is the wordplay.
'computing' becomes 'it' (IT is an abbreviation for Information Technology).
'bores' is an insertion indicator (bore can mean to drill into).
'represented' is an anagram indicator.
'rarely' anagrammed gives 'lerary'.
'it' going into 'lerary' is 'LITERARY'.
(Other definitions for literary that I've seen before include "Concerning written material" , "The scholarly type" , "collection of editions of books" , "well read" , "Concerning books" .)