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digital electronics

digital electronics in Technology
electronics
The implementation of two-valued logic using electronic logic gates such as and gates, or gates and flip-flops. In such circuits the logical values true and false are represented by two different voltages, e.g. 0V for false and +5V for true. Similarly, numbers are normally represented in binary using two different voltages to represented zero and one.
Digital electronics contrasts with analogue electronics which represents continuously varying quantities like sound pressure using continuously varying voltages.
Digital electronics is the foundation of modern computers and digital communications. Massively complex digital logic circuits with millions of gates can now be built onto a single integrated circuit such as a microprocessor and these circuits can perform millions of operations per second.
(2006-01-14)
The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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