Analog vs Digital: Home

Encyclopedia article about digital technology and how it differs from analog, contributed by Don M. Gruenbacher, Ph.D., Associate Professor of Electrical and Computer Engineering, Kansas State University.
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In this article, we will examine analog and digital recording so that you have a complete understanding of the difference between the two techniques.

1999 article from Current Science magazine, published when HDTV was a new idea, explains what makes digital TV different from analog.
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Which is better, digital or analog sound? Is there really a difference? Do you have to own really expensive audio equipment to discern any differences? And does it really matter?

Article by British science writer Chris Woodford.
Includes sections on: What is analog technology, What is digital technology, and Which is better, analog or digital.

Article from Bitesize, the BBC's free online study support resource for school-age students in the United Kingdom.

What's the difference between Analog and Digital? Analog and digital signals are used to transmit information, usually through electric signals. In both these technologies, the information, such as any audio or video, is transformed into electric signals. The difference between analog and digital technolo...

Quite simply, analog-to-digital conversion changes a continuously variable (analog) signal to a multi-level (digital) signal, without changing its content. This is accomplished with an analog-to-digital converter (ADC). The input consists of a voltage (also called electromotive force); examples include waveforms representing human speech and signals from a television camera. While the input varies among an infinite number of values, the converter's output is a defined level or state in a power of two. This entry briefly explains the process and includes links to related terms.