Describe Synchronous and Asynchronous Transmission

Synchronous Transmission

• It does not use start and stop bits hence data transfer rate is quicker.
• It uses clock signals that are built at each component.
• Transmission at sending and receiving ends is sped up to increase synchronization.
• Continuous stream of data is sent between the two nodes
• Resynchronization is used to address lost bits.
• It uses check digits instead of parity bits for ensuring the byte is correctly being interpretted and received.

Asynchronous Transmission

• It uses start and stop bits to signify the beginning bit of ASCII character that is to be transmitted
• Used to send data intermittently
• Start and stop bits are of opposite polarity