Short for packet-switched data network, a data communications network that is based on the principles of packet switching, as opposed to circuit switching that is used in public telephone networks. Packet-switched networks do not establish physical communication channels between communicating devices like circuit-switched networks do. Instead, signals are formed into fixed-length packets that are affixed with a source and destination address and packet ordering details. The packets then rely on network routers to read the address data and route the packets through the network to their destinations. When the packets arrive at the receiving device, the packet ordering data is used to reassemble the original signal. One advantage of packet-switched networks is that packets from different sources going to different destinations can share common data pathways.
Also called a packet-switched network, or PSN.
(pronounced P-SIP) Acronym for Program and Systems Information Protocol, is the ATSC standard for digital television channel naming, numbering and navigation.
Short for phase-shift keying, a modulation technique used by modems in which different phase angles in the carrier signal are used to represent the binary states of 0 and 1. The simplest method of PSK, also called biphase modulation, uses two signal phases – 0 degrees and 180 degrees. The digital signal is broken up […]
Short for packet-switched network, another name for a packet-switched data network.
Short for Plastic Small Outline Package, it’s a surface-mount memory packaging from Intel. key features of the PSOP include the following: JEDEC standard compliance, footprint and height 50 percent of DIP, two-side leaded for routing simplicity, 50 mil (1.27 mm) pitch for SMT simplicity and ease of use, gull wing formed leads, and it supports […]
- Public Switched Telephone Network (PSTN)
Short for Public Switched Telephone Network, which refers to the international telephone system based on copper wires carrying analog voice data. This is in contrast to newer telephone networks base on digital technologies, such as ISDN and FDDI. Telephone service carried by the PSTN is often called plain old telephone service (POTS).