Digital System and Analog System
What is Digital system and Analog system?
A method of storing, processing and transmitting information through the use of distinct electronic or optical pluses that represent the binary digit 0 and 1.
Analog is a transmission standard that uses electrical impulses to emulate the audio waves of sound. When you use a phone, the variations in your voice are transformed down the line to the exchange.
Difference between Digital system and Analog system
Signal
Analog signal is continuous signal which represents physical measurement.
Digital signals are discrete time signals generated by digital modulation
Waves
Denoted by sine waves
Denoted by square waves
Representation
Uses continuous range of value to represent information
Uses discrete or discontinuous values to represent information
Example
Human voice in air, Analog electronic devices
Computers, CDs, DVDs, and other digital electronic devices
Flexibility
Analog hardware is not flexible
Digital hardware is flexible in implementation
Uses
Can be used in Analog devices
Best suited for Computing and digital
Memory
Stored in the form of wave signal
Stored in the form of binary bit
Power
Analog instrument draws large power
Digital instrument draws only negligible power
Impedance
Low
High order of 100 mega ohm
Advantages and Disadvantages
Advantages of Digital System:
What is Digital system and Analog system?
A method of storing, processing and transmitting information through the use of distinct electronic or optical pluses that represent the binary digit 0 and 1.
Analog is a transmission standard that uses electrical impulses to emulate the audio waves of sound. When you use a phone, the variations in your voice are transformed down the line to the exchange.
Difference between Digital system and Analog system
Signal
Analog signal is continuous signal which represents physical measurement.
Digital signals are discrete time signals generated by digital modulation
Waves
Denoted by sine waves
Denoted by square waves
Representation
Uses continuous range of value to represent information
Uses discrete or discontinuous values to represent information
Example
Human voice in air, Analog electronic devices
Computers, CDs, DVDs, and other digital electronic devices
Flexibility
Analog hardware is not flexible
Digital hardware is flexible in implementation
Uses
Can be used in Analog devices
Best suited for Computing and digital
Memory
Stored in the form of wave signal
Stored in the form of binary bit
Power
Analog instrument draws large power
Digital instrument draws only negligible power
Impedance
Low
High order of 100 mega ohm
Advantages and Disadvantages
Advantages of Digital System:
- Less expensive
- More reliable
- Easy to manipulate
- Flexible
- Compatibility with other digital system
- Integrated networks
- Sampling Error
- Digital communications require greater bandwidth
- The detection of digital signals requires the communications system to be synchronized
- Uses less bandwidth
- More accurate
- High cost of signal conversion inside the display
- Upgrade to digital interface not possible