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Lecture notes

data and signals

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Comsats Institute Of Information And Technology
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Data Communication & Networking
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best explanation of data and signals

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Chapter 3
Data and Signals



3.1

, Note

To be transmitted, data must be
transformed to electromagnetic signals.




3.2

, 3-1 ANALOG AND DIGITAL

Data can be analog or digital. The term analog data refers
to information that is continuous; digital data refers to
information that has discrete states. Analog data take on
continuous values. Digital data take on discrete values.




Topics discussed in this section:
Analog and Digital Data
Analog and Digital Signals
Periodic and Nonperiodic Signals


3.3

, Note

Data can be analog or digital.
Analog data are continuous and take
continuous values.
Digital data have discrete states and
take discrete values.



3.4
Connected book
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Behrouz Forouzan Data Communications and Networking
Publisher: Unknown ISBN: 9780072967753 Edition: Unknown

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Uploaded on
September 14, 2021
Number of pages
116
Written in
2021/2022
Type
Lecture notes
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Dr. sami
Contains
Data and signals
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