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There are various Electronics communication machine. Some of them are given below.
Internet: The internet and other new technologies are having on public relations professionals, journalists, and the public. It also researches the perceived credibility of the Internet, and studies the impact the new technologies are having on relationships between people and relative. As the world's largest information source, the Internet provides the public relations industry with an exciting communication medium offering unlimited message dissemination potential.

The Internet clearly offers possibility for great change in the way people practice public relations. Some believe special interest groups, NGOs, and a variety of anti-corporate and anti-capitalism organizations (ACOs), have taken better advantage of these cyberspace opportunities and used the Internet more effectively for public relations purposes than many corporations and most public relations and advertising agencies.

The most important component in credibility and believability of information contained on the Internet is the source of the information. Since effective public relations not only involves sending information to target audiences, but also requires forming relationships with these audiences, the building of relationships with key publics is a fundamental goal of what public relations professionals do.

Inter Dis-communication Machine: two participants exchange their visual perspectives, which force them to see things the other way. You wear a heard-mounted display covering eyes and ears and a backpack with angel wings. Each HMD has two monitors and a video camera. The backpack is equipped with a battery, a TV tuner and a transmitter. A TV antenna is installed inside the wings.

Fixed Telephones: The term landline is also used to describe a connection between two points that consists of a dedicated physical cable, as opposed to an always-available private link that is actually implemented as a circuit in a wider switched system (usually the public telephone network). So-called leased lines are invariably of the latter type; the implication of a landline in this context is one of security and especially of survivability. A landline or main line is a telephone line which travels through a solid medium, either metal wire or optical fiber. This is distinguished from a mobile cellular line, where the medium used is the airwaves. Landlines usually cost less than cellular lines and are used when there is no need for mobility or cellular service is unavailable.

Pager: A pager is a small telecommunications device that receives (and, in some cases, transmits) alert signals and/or short messages. This type of device is convenient for people expecting telephone calls, but who are not near a telephone set to make or return calls immediately. Pagers were designed as receive-only devices. There are at least two reasons for this. First, if two-way communication is needed, cell phones are available for that purpose. Second, it is difficult to engineer an efficient wireless transmitter inside a tiny package and provide enough signal range to reach repeaters from all points within the coverage zone.

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