Computer aid for good memory (7)
I believe the answer is:
program
'computer aid' is the definition.
'for good memory' is the wordplay.
'for' becomes 'pro' (I've seen this before).
'good' becomes 'g' (abbreviation).
'memory' becomes 'ram' (RAM is an example).
'pro'+'g'+'ram'='PROGRAM'
(Other definitions for program that I've seen before include "Set of computer instructions" , "A series of software instructions to a computer" , "system of instructions" , "Mechanical actions to be performed" , "Code" .)