Serial Vs Parallel Communication. The example of serial communications are usb sata i2c spi etc. In parallel transmission many bits are flow together simultaneously from one computer to another computer.
Parallel communication uses more wires to allow the transfer of data simultaneously. The key difference between serial and parallel communication is that in serial communication data transmission occurs bit by bit at a time while in parallel communication multiple bits transmit at a time. Parallel connections have multiple wires running parallel to each other hence the name and can transmit data on all the wires simultaneously.
Serial transmission requires a single line to communicate and transfer data whereas parallel transmission requires multiple lines.
Parallel connections have multiple wires running parallel to each other hence the name and can transmit data on all the wires simultaneously. Serial communication uses fewer connections and cables than parallel communication does. The crucial difference between serial and parallel communication is that in serial communication a single communication link is used to transfer the data from an end to another. Error and noise are least in serial as compared to parallel transmission.