The best and suitable answer for the following question is Video Conferencing.
Explanation:
Video conferencing is one of the most widely used mode of visual communication or with the help of computer network we used to transmit video and audio data from two or more participants. And each and every participant of video conference having a microphone, speaker and a camera mounted on their computer system.
It will be the most fastest growing mode of computer industry so it will be the most common segment of visual communication.
A good option for Peter's father's computer needs would be a laptop or a notebook. It is handy so he can bring it to and from the office. It is also has the specifications needed for his word processing tasks as long as he installs a work processing software.
