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Digital Electronic System - Lab Report Example

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This lab report "Digital Electronic System" discusses the design and simulation of Asynchronous Serial Data Transmission using the multi sim software. It covers the various design methods including Parallel to serial conversion; use of higher-level logic constructs, for this case, the multiplexers…
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Extract of sample "Digital Electronic System"

Download file to see previous pages UART receives parallel bytes of data from the computer and transmits the individual bits in sequential form. At the receiving end, a corresponding UART receives and re-assembles the bits in complete bytes by adding start bits, stop bit, and parity bit in their transmission (Breuer & Friedman, 2011). For a UART to function properly, it must be in full-duplex mode. Data thus is transmitted in two directions simultaneously.

Asynchronous serial data transmission protocols involve sending data serially. Serial data transfer is a form of transmission where bits of characters are sent one at a time along a communication path that must be at a known transmission rate called the baud rate. However, there are two types of serial data transmission. These are Synchronous serial communication and Asynchronous serial transmission.

Synchronousserialcommunication is a serial communications protocol where data is sent in a continuous stream at a constant rate. In synchronous serial communication, data is sent as frames of large data blocks.

The asynchronous serial transmission does not require sending or receiving idle characters. However, the beginning and end of each byte of data must be identified by starts and stop bits. The start bits how when the byte containing data is to begin and the stop bit transfer when it ends. Therequirement causes asynchronous communications to be slightly slower than synchronous. The advantage is that the processor does not have to deal with the additional idle character.
It is simple to implement an asynchronous serial transmitter using a 10-bit shift register and a little extra hardware. Already to be transmitted character is loaded parallel into the shift register together with start and stop bits after which data is then shifted out at the baud rate until the shift register has a value of zero. ...Download file to see next pagesRead More
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