Who coined the term packet switching while working at the UK National Physical Laboratory? Donald Davies. British computer scientist Donald Davies coined the term “packet switching” while developing a more efficient way for computers to communicate at the National Physical Laboratory in the 1960s.
Davies recognized that computer traffic was bursty: machines often transmit data in short bursts separated by silence. Instead of reserving a complete telephone circuit, his proposed system divided messages into small packets. Each packet could travel through a network and be reassembled at its destination, allowing many users to share links efficiently. He chose the word “packet” after consulting an NPL linguist because it translated well into other languages.
Paul Baran independently developed a related packet-based networking concept in the United States, so Davies was not the only person associated with the underlying idea. Davies, however, is credited with naming the technique and leading its early practical implementation. The NPL network became operational in 1969, and Davies’s work strongly influenced the design of ARPANET, a major predecessor of the modern Internet.