The computer can symbolize spiritual records and the past, present and future.
A database would, for instance, suggest the ordering of information.
Text messaging might suggest brief but necessary information, whereas a fax, being slightly outdated, requires us to bring what we know up to date.
The telephone signifies communication with unseen people and might therefore highlight communication with the spirit world.
The television is, quite literally, a medium through which information is passed.
The internet will tend to signify wider, more global, communication and available information.