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Standard Internet communications protocols that allow digital computers to communicate over long distances. The Internet is a packet-switched network, in which information is broken down into small packets, sent individually over many different routes at the same time, and then reassembled at the receiving end. TCP is the component that collects and reassembles the packets of data, while IP is responsible for making sure the packets are sent to the right destination. TCP/IP was developed in the 1970s and adopted as the protocol standard for ARPANET (the predecessor to the Internet) in 1983.
Variants of TCP/IP
TCP/IP in full Transmission Control Protocol/Internet Protocol
This entry comes from Encyclopædia Britannica Concise. For the full entry on TCP/IP, visit Britannica.com.