<
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)