A Discrete-Time Signal is a sequence of values or samples taken at specific intervals from a continuous signal. These samples represent the signal's amplitude at distinct points in time, allowing for easier analysis and processing in digital systems. Discrete-time signals are commonly used in digital communication and signal processing applications. In contrast to continuous signals, which can take any value at any time, discrete-time signals are defined only at certain time intervals. This makes them suitable for digital devices, such as computers and digital signal processors, which operate on discrete data. Examples of discrete-time signals include audio samples and digital images.