Analog-to-digital conversion changes continuous analog signals to discrete digital ones.ĭigital signals propagate more efficiently than analog signals, largely because digital impulses are well defined and orderly. All whole numbers can be represented in binary form as strings of ones and zeros. The simplest digital signals have only two states and are called binary. The number of states is almost always a power of two - that is, 2, 4, 8, 16, etc. The output of the analog-to-digital converter has defined levels or states. Examples are sine waves, the waveforms representing human speech and the signals from a conventional television camera. The analog input to a converter consists of a voltage that varies among a theoretically infinite number of values.

What is analog-to-digital conversion (ADC)?Īnalog-to-digital conversion (ADC) is an electronic process in which a continuously variable, or analog, signal is changed into a multilevel digital signal without altering its essential content.Īn analog-to-digital converter changes an analog signal that's continuous in terms of both time and amplitude to a digital signal that's discrete in terms of both time and amplitude.

Digital to analog tv converter