Wired communications refer to the transfer of information over a distance using physical wires or cables, spanning simple personal setups to advanced global networks. Here is a comprehensive overview of examples, ranging from everyday uses to specialized systems:
- Simple and Traditional
- Landline Telephones: Traditional phones using copper wires to transmit voice signals via the Public Switched Telephone Network (PSTN).
- Corded Telephones: Classic landline telephone, using copper wires for voice transmission.
- Wired Headphones/Earphones: Connecting to audio devices via a physical cable (3.5mm jack, USB-C, etc.).
- Wired Computer Peripherals: Traditional mice and keyboards using USB or older PS/2 connections.
- Home and Office Networking
- Ethernet Cables: Backbone of wired internet connections in homes and offices, including Cat 5, Cat 6 cables.
- USB (Universal Serial Bus) cables: Connect various peripherals like keyboards, mice, printers, and external storage devices to computers.
- HDMI (High-Definition Multimedia Interface) cables: Transmit high-definition audio and video from devices like Blu-ray players to TVs or monitors.
- Coaxial Cables: Used for cable TV and internet services, transmitting audio, video, and data.
- Powerline Networking: Uses electrical wiring within buildings to transmit data, enabling communication over power lines.
- Industrial and High-Speed
- Fiber Optic Cables: Employ light signals to transmit data with high speed and bandwidth across long distances, vital for telecommunications and internet backbones.
- Serial Cables: Including types like RS-232 for connecting industrial equipment and for data transfer between devices.
- T-Carrier Systems: Such as T1 and T3 lines, used by telecommunication providers for high-capacity voice and data transmission.
- Digital Subscriber Line (DSL): Uses copper telephone lines for high-speed internet access.
- Specialized and Advanced Systems
- Integrated Services Digital Network (ISDN): Sends voice, video, data, and other network services over digital telephone lines.
- Leased Lines: Dedicated wired connections that organizations lease from telecommunications providers for reliable data transmission.
- Submarine Communications Cables: Insulated cables laid on ocean floors to transmit data and telecommunications across continents.
- HDMI, DisplayPort, DVI: Wired standards for high-definition video and audio transmission between computers, monitors, TVs, and other devices.
These examples illustrate the extensive range of wired communication technologies and their applications, from basic telephone lines to complex fiber optic networks and specialized telecommunications systems.