File Name: parallel and serial data transmission .zip
Data transmission and data reception or, more broadly, data communication or digital communications is the transfer and reception of data a digital bitstream or a digitized analog signal  over a point-to-point or point-to-multipoint communication channel.
Data is transmitted from one device to another in analog or digital format. Basically, data transmission enables devices or components within devices to speak to each other. Data is transferred in the form of bits between two or more digital devices. There are two methods used to transmit data between digital devices: serial transmission and parallel transmission. Serial data transmission sends data bits one after another over a single channel.
There are two ways to transfer data between computers: Serial Transmission and Parallel Transmission. Data is sent bit by bit from one computer to another in two directions. Each bit has a clock pulse rate. Eight bits are transmitted at a time, with a start and stop bit known as a parity bit, which is 0 and 1, respectively. Data cables are used when transmitting data over a longer distance.
One of the best things about UART is that it only uses two wires to transmit data between devices. The transmitting UART converts parallel data from a controlling device like a CPU into serial form, transmits it in serial to the receiving UART, which then converts the serial data back into parallel data for the receiving device. Only two wires are needed to transmit data between two UARTs. Instead of a clock signal, the transmitting UART adds start and stop bits to the data packet being transferred. These bits define the beginning and end of the data packet so the receiving UART knows when to start reading the bits.
Digital data transmission can occur in two basic modes: serial or parallel. Data within a computer system is transmitted via parallel mode on buses with the width of the parallel bus matched to the word size of the computer system. Data between computer systems is usually transmitted in bit serial mode. Consequently, it is necessary to make a parallel-to-serial conversion at a computer interface when sending data from a computer system into a network and a serial-to-parallel conversion at a computer interface when receiving information from a network. The type of transmission mode used may also depend upon distance and required data rate. Parallel devices have a wider data bus than serial devices and can therefore transfer data in words of one or more bytes at a time.
Serial communication is common method of transmitting data between a computer and a peripheral device such as a programmable instrument or even another computer. Serial communication transmits data one bit at a time, sequentially, over a single communication line to a receiver. Serial is also a most popular communication protocol that is used by many devices for instrumentation. This method is used when data transfer rates are very low or the data must be transferred over long distances and also where the cost of cable and synchronization difficulties makes parallel communication impractical. Serial communication is popular because most computers have one or more serial ports, so no extra hardware is needed other than a cable to connect the instrument to the computer or two computers together.
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.
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The communication is very well known terminology which involves the exchange of information between two or more mediums.Reply
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For transferring data between computers, laptops, two methods are used, namely, Serial Transmission and Parallel Transmission.Reply