Difference between Synchronous and Asynchronous Transmission
Last Updated :
29 Jan, 2024
Synchronous Transmission: In Synchronous Transmission, data is sent in form of blocks or frames. This transmission is the full-duplex type. Between sender and receiver, synchronization is compulsory. In Synchronous transmission, There is no time-gap present between data. It is more efficient and more reliable than asynchronous transmission to transfer a large amount of data.Â
Example:
- Chat Rooms
- Telephonic Conversations
- Video ConferencingÂ
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Asynchronous Transmission: In Asynchronous Transmission, data is sent in form of byte or character. This transmission is the half-duplex type transmission. In this transmission start bits and stop bits are added with data. It does not require synchronization.Â
Example:
- Email
- Forums
- Letters
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Now, let’s see the difference between Synchronous Transmission and Asynchronous Transmission:
In Synchronous transmission, data is sent in form of blocks or frames. Â |
In Asynchronous transmission, data is sent in form of bytes or characters. |
Synchronous transmission is fast. |
Asynchronous transmission is slow. |
Synchronous transmission is costly. |
Asynchronous transmission is economical. |
In Synchronous transmission, the time interval of transmission is constant. |
In Asynchronous transmission, the time interval of transmission is not constant, it is random. |
In this transmission, users have to wait till the transmission is complete before getting a response back from the server. |
Here, users do not have to wait for the completion of transmission in order to get a response from the server. |
In Synchronous transmission, there is no gap present between data. |
In Asynchronous transmission, there is a gap present between data. |
Efficient use of transmission lines is done in synchronous transmission. |
While in Asynchronous transmission, the transmission line remains empty during a gap in character transmission. |
The start and stop bits are not used in transmitting data. |
The start and stop bits are used in transmitting data that imposes extra overhead. |
Synchronous transmission needs precisely synchronized clocks for the information of new bytes. |
Asynchronous transmission does not need synchronized clocks as parity bit is used in this transmission for information of new bytes. |
Errors are detected and corrected in real time. |
Errors are detected and corrected when the data is received. |
Low latency due to real-time communication. |
High latency due to processing time and waiting for data to become available. |
Examples: Telephonic conversations, Video conferencing, Online gaming. |
Examples: Email, File transfer,Online forms. |
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