Well the Third Imperium is currently set in the 57th century but I understand your sentiment
I wrote up a CIC for warships in LBB:2 CT, as part of that you could install extra computers for combat tasks:
tactical maneuver, ECM, target, mulit-target, select, you could have one computer per "battery" or even one computer per gunner if you wanted.
The ship's main computer was still capable of running the ship and basic combat, but the CIC and specialist computers made for a much more scary warship.
Combat Information Centre [CIC] module 4tons, 1MCr, 1 crew required, per additional computer installed
The CIC allows a warship to install more computers to allow designated turrets to use the combat programs of the local computers rather than the ship's main computer.
Example, a 2000t destroyer with a model 7 computer and 20 turrets can only engage up to 4 separate targets. To make it more effective versus fighters and the like, the architect opts to install a 16t CIC and 4 model 5 computers (to run target, multi-target 4, predict 4, gunner interact, and return fire). The destroyer may now fire each turret at a separate target.