Data:
entities that convey meaning
what is analog data:
–continuous values within some interval
– e.g. sound, video
what is digital data:
– discrete values
– e.g. text, integers
Data Communications Model:
 |
| Data Communications Model |
People also ask by GOOGLE
Signals (electromagnetic or electric):
means by which data are propagated
what is analog (or contiguous) signal is continuously varying
electromagnetic wave that propagates over (a variety of)
medium
what is digital (or discrete) signal is sequence of voltage pulses
that are transmitted over a wire medium. The signal
intensity maintains a constant level for some time and then
changes to another constant level.
Analog and Digital Signals: Examples:
Digital Signal Carrying Analog & Digital Data:
 |
إرسال تعليق
have you a any doubt then tell and if you want some topic then please tell .