Analog Signals

Analog signals are continuous waveforms that vary in amplitude and frequency. These signals are represented by a smooth, curving line on a graph and can take on any value within a certain range. Analog signals are used to transmit audio, video, and other types of data that require a continuous stream of information. 

Digital Signals

Digital signals, on the other hand, are discrete, binary signals that consist of only two states: high (1) and low (0). These signals are represented by square waveforms on a graph and are used to transmit data in efficient packets. Digital signals are commonly used in modern electronics such as computers, smartphones, and digital televisions.