Saturday, November 14, 2009

Analog and Digital Signals

If a continuous-time signal x(t) can take on any value in the continuous interval (a, b),
where a may be - infinity and b may be + infinity, then the continuous-time signal x(t) is called an
analog signal. If a discrete-time signal x[n] can take on only a finite number of distinct
values, then we call this signal a digital signal

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