Compare characteristics of asynchronous and synchronous transmission mode (four points).
Synchronous transmission
|
Asynchronous transmission
|
1. Synchronous transmission are synchronized by an external clock.
|
1. Asynchronous transmission are synchronized by special signals along the transmission media.
|
2.In synchronous transmission data flows in a full duplex mode in the form of blocks or frames.
|
2. In asynchronous transmission data flows in a half duplex mode, 1byte or a character at a time.
|
3. In synchronous transmission ,data transmission speed is fast.
|
3. In asynchronous transmission, data transmission speed is slow.
|
4. Synchronous transmission is cost expensive.
|
4. Asynchronous transmission is economical.
|
5. Synchronous transmission is used for transferring the bulk of data as it is efficient.
|
5. Asynchronous transmission is used for transferring a small amount of data as it is simple and economical.
|