Delay line

Delay line may refer to:


 * Propagation delay, the length of time taken for something to reach its destination
 * Analog delay line, used to delay a signal
 * Bi-directional delay line, a numerical analysis technique used in computer simulation for solving ordinary differential equations by converting them to hyperbolic equations
 * Digital delay line, a sequential logic element
 * Delay-line memory, a form of computer memory used on some of the earliest digital computers
 * Detcord delay line loops