This type of cable is also prone to distortion and noise. Older printers and table-top scientific devices such as multimeters are examples of equipment that uses parallel ports to communicate.
Serial transmission moves data one bit at a time, and so the cables only need one pair of wires to transfer data. One wire receives data, and the other sends it.
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Serial Communication. Parallel Communication. The process of transmitting data bit by bit in sequence using a single channel. Serial data transmission sends data bits one after another over a single channel. Parallel data transmission sends multiple data bits at the same time over multiple channels. When data is sent or received using serial data transmission , the data bits are organized in a specific order, since they can only be sent one after another. The order of the data bits is important as it dictates how the transmission is organized when it is received.
It is viewed as a reliable data transmission method because a data bit is only sent if the previous data bit has already been received. Example of Serial Data Transmission Serial transmission has two classifications: asynchronous and synchronous.
Asynchronous Serial Transmission Data bits can be sent at any point in time. Stop bits and start bits are used between data bytes to synchronize the transmitter and receiver and to ensure that the data is transmitted correctly. The time between sending and receiving data bits is not constant, so gaps are used to provide time between transmissions. The advantage of using the asynchronous method is that no synchronization is required between the transmitter and receiver devices.
It is also a more cost effective method. A disadvantage is that data transmission can be slower, but this is not always the case.
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