Skip to main content

multivalued logic

multivalued logic (nonbinary logic) Digital logic for use in logic circuits that are designed to handle more than two levels (voltages, etc.). In q-valued logic there are q levels and each memory element (flip-flops, etc.) can exist in q different states. The classification of logic circuits into combinational and sequential circuits applies to multivalued logic exactly as it does to binary logic.

There is much interest currently in ternary logic (q = 3) and, to a somewhat lesser extent, in quaternary logic (q = 4). Such logics promise reduced numbers of logic gates, memory elements, and – perhaps most significantly – interconnections. Ternary logic is simple to implement in CMOS technology, and is likely to become important in the design of VLSI circuits. Its increased logical richness is shown by the fact that there are 16 possible two-input binary gates, but 19 683 such ternary gates (ignoring degeneracies in both cases).

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"multivalued logic." A Dictionary of Computing. . 19 Feb. 2019 <>.

"multivalued logic." A Dictionary of Computing. . (February 19, 2019).

"multivalued logic." A Dictionary of Computing. . Retrieved February 19, 2019 from

Learn more about citation styles

Citation styles gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, cannot guarantee each citation it generates. Therefore, it’s best to use citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

The Chicago Manual of Style

American Psychological Association

  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.