The court heard the other two viruses had real destructive qualities and were programmed to stop computers operating and when infected computers were re-booted, the viruses would destroy material.
But church leaders said they had to silence it completely because the bell's computer software could not be programmed locally to stop it chiming at night.
Mercedes-Benz, for example, has programmed cars to stop and go into Park when the door is opened, no matter whether the driver has correctly engaged the Park button used on certain shifter stalks.