ANALOG AND DIGITAL

ANALOG AND DIGITAL

To be transmitted, data must be transformed to electromagnetic signals

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.

• Analog and Digital Data
•  Analog and Digital Signals
•  Periodic and Nonperiodic Signals

Analog and Digital Data:

• Data can be analog or digital.
• Analog data are continuous and take continuous values.

·         Digital data have discrete states and take discrete values

Analog and Digital Signals:

•         Signals can be analog or digital.

•         Analog signals can have an infinite number of values in a range.

•         Digital signals can have only a limited number of values.

                    

Figure 1 Comparison of analog and digital signals