Their unique pros and cons notwithstanding, the choice of their implementation varies depending on the application. Serial communication, on the other hand, is cheaper as it uses only one wire to transfer data. When it comes to the speed of data transmission, parallel communication is faster but can cause issues like cross talk and is costlier due to the higher amount of wires it needs. So for serial communication, only one wire is used to transfer 8-bit data (bit by bit) whereas parallel communication requires eight wires. But for parallel communication individual wires are required for each bit. In the case of serial communication, one wire is enough to send multiple bits of data in the form of a stream of bits. Communication protocols generally have some standards to maintain, and these standards are governed by groups or consortiums.Ĭomputers can communicate with one another using serial or parallel transmission of data. It could, in theory, be used to facilitate the implementation of an asynchronous serial protocol, but it itself isn’t one. It’s just an electronic circuit that receives and transmits data serially in an asynchronous manner. Note that UART is NOT a communication protocol like SPI, I2c etc.
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