(mathematics) The branch of mathematics dealing with the art of transmitting messages reliably over a noisy channel by adding redundancy to the message.

(computing) A numeric value or string of such values that triggers a specific command or action to occur, rather than displaying a text character.

plural of time code

(computer science) A system of instructions and data directly understandable by a computer's central processing unit.

A sequence of letters and/or numbers added to a postal address to aid the sorting and delivery of post/mail.

plural of ZIP Code

A numeric code generated at regular intervals by a timing system.

A code used on DVDs to identify which region's DVD player it will play in. / A code used in DVD players to allow only DVDs being sold in that region to be played.

(computing) Instructions for a computer in a form the computer can directly use (i.e. which it can execute). Derived from source code by compiling or assembling and linking.

(computing) the attachment of a digital certificate (from a certification authority) to an executable program to ensure its legitimacy