‘Computer’ means an electrical device which performs arithmetic or logical functions on information that is recorded in the form of electronic or magnetic impulses, and includes any device connected to a computer for the purpose of communicating, processing, storing or retrieving such information. The term does not include a device such as a radio or television transmitter or receiver, television camera, videotape recorder, sound recorder, phonograph or similar device which is used for reproducing information in aural or visual form without changing the nature or content of the information, unless such a device is connected to and used by a computer.