What technology does PCM represent?

Pulse Code Modulation is a method used to digitally represent analog signals. In PCM, the amplitude of an analog signal is sampled at uniform intervals and then quantized to a series of symbols, which can be represented by binary numbers. This technique is fundamental in digital audio, telecommunications, and various forms of signal processing, as it allows for the efficient transmission and storage of data without significant loss of quality.

The other options provided refer to different concepts or methods that are not widely recognized or are not directly related to the process of encoding analog signals into a digital format. Understanding PCM is vital in various fields, especially in areas where high fidelity and accurate representation of sound and other analog signals are necessary.