Types Of Data Transmission

Types Of Data Transmission

There are two types of data transmission in computers they are - 

1. Analog Transmission.
2. Digital Transmission.

1. Analog Transmission :- Analog signals can travel longer distances. It is easy to convert the digital signal into an analog equivalent and send it to long distances. This method is called Modulation. At the receiving end the digital form of 0 or 1 can be recovered from the analog signals. This method of retrieval is called demodulation. This approach seems to be simple but there is a limitation in it. These signals are highly disturbed by electric fluctuations. Noise in electric parlance mixes with the analog signal and disturbs it. 

2. Digital Transmission :- The digital signals are less error prone. These signals cannot travel longer distances like the analog signals. A booster is required to do so. The digital signals are absorbed and regenerated at regular intervals and in this way noise signals are eliminated. The digital transmission is preferred to analog transmission due to its high quality.