digital electronics definition electronics
The implementation of two-valued logic
using electronic logic gates
such as and gates, or gates
. 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.