A number of fewer digits than a telephone number, used as an abbreviated telephone number for use only when dialing from a cellular phone.

Universal product code.

(computing, informal) The place where programmers develop source code (as opposed to conceptually distant areas such as design and marketing).

(computing, programming) A technique in object-oriented programming in which the visual and back-end source code are stored in separate files, allowing designers and programmers to work independently. Code-behind is a technique used in Microsoft programming platforms, including ASP.NET and XAML, where the practice is facilitated by separating the visual and code aspects through the use of partial classes.

(computing) The code or value generated by a hash function to represent some piece of data.

The act of enforcing a set of rules, principles, or laws (especially written ones) and ensuring observance of a system of norms or customs.

(coding theory) A rateless erasure code.

(information theory) A forward-error-correction (FEC) code for the binary erasure channel, which transforms a message of k symbols into a longer message with n symbols such that the original message can be recovered from a subset of the n symbols.

(radio) A code used to express the quality of a radio signal being received, standing for Readability, Strength and (for nonvoice communication) Tone.

(computing) code that can never be reached during program execution because no part of the program calls it or branches to it.