Licensed proprietor shown malfunctioning CPU in lab (8)

I believe the answer is:

publican

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'licensed proprietor' is the definition.
'publican' can be an answer for 'proprietor' (thesaurus). I am not certain of the 'licensed' bit.

'malfunctioning cpu in lab' is the wordplay.
'malfunctioning' indicates an anagram.
'cpu'+'in'+'lab'='cpuinlab'
'cpuinlab' anagrammed gives 'PUBLICAN'.

'shown' is the link.

Can you help me to learn more?

(Other definitions for publican that I've seen before include "Mine host" , "one's seen in the bar" , "Landlord or landlady" , "Bar manager" , "Inn-keeper or old Roman tax collector" .)

I've seen this clue in The Irish Times.

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