Computerised picture of Silicon Valley (4)

I believe the answer is:

icon

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'computerised picture' is the definition.
The answer and definition are not the same part of speech.

'of silicon valley' is the wordplay.
'of' says the answer is hidden in the clue.
'ICON' is hidden within 'silicon valley'.

Can you help me to learn more?

(Other definitions for icon that I've seen before include "Holy image or symbol on computer screen" , "object of admiration" , "Idol" , "Figure of Christ in Eastern churches" , "Religious work" .)

I've seen this clue in the Evening Standard.

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