- UDP
User Datagram Protocol. A "connection-less" protocol that is similar to TCP in that it relies on IP addresses, except that the sender of messages in not aware of listeners. See also TCP.
- unbundle node
Function that separates (unbundles) a cluster into one or more individual elements. See also Unbundle Node.
- unit
A unit of measurement. A physical dimension. For example, meter, foot, year, deg C, Joule, millisecond.
- universal constant
Uneditable block diagram object that emits a particular ASCII character or standard numeric constant; for example, pi.
- URL
Uniform Resource Locator. A logical address that identifies a resource on a server, usually on the Web. For example, http://www.labviewforeveryone.com/ is the URL for the web site of this book.
- USB
Universal Serial Bus. A very common serial bus for connecting devices, usually computer peripherals.
- user-defined constant
Block diagram object that emits a value you set.
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