Which of the following can be categorized under electronically-based communication?

Typographic, audio-visual and computer-mediated forms are grouped here under electronically-based communication, marking statements 1, 2 and 3.

Audio-visual channels such as radio, film and television carry sound and picture through electronic means.

Computer-mediated communication passes messages through networked digital machines.

Together these three represent successive technologically-mediated modes of carrying messages beyond direct speech.

Personal conversation, in statement 4, is direct face-to-face interaction that uses no such technology.

The cylinder press, in statement 5, names a single printing machine rather than a mode of communication.