Asynchronous:
- In this type of communication, both parties can pass wherever they need, for this, the sender breaks data into small pieces of information called bytes.
- This method is used so that the computers can coordinate the data transmission.
- The asynchronous transmissions via telephone lines are limited to 28,800 bps, although various forms of hardware and software based on compression can increase the rate up to 115,200 bps. This method works with parity checking routine, which ensures the data integrity.
Synchronous:
- In this type of communication, the transmission is established in accordance with an interval synchronized at the beginning of the negotiation between the computer sender to the recipient. The synchronization bits are used to initiate and terminate the sequence and also to verify the regular transmission accuracy.
- This method is more efficient than the one used by asynchronous because there's no need to split the transmission into small parts.
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