Advantages of Serial Interface disadvantages of Serial Interface This page covers advantages and disadvantages of Serial Interface. It mentions Serial Interface advantages or benefits and Serial Interface disadvantages or drawbacks. What is Serial Interface? In serial communication data bits are transmitted one after the other in sequential manner using single communication channel. Example of serial interface is RS-232 which is point to point and asynchronous interface.

It is used between devices (i.e. DTE and DCE). Protocol uses start bit and stop bit for data communication. Serial interfaces may have multiple lines but only one line is used for data communication. There are two methods in serial communication viz. Synchronous and asychronous.

Parallel transmission can be used for data transfer on a short distance, for instance between components of a machine (PCI protocol). However, for great distances, serial transmission is preferred: using parallel transmission would require too much equipment. Both serial and parallel transmissions have advantages and disadvantages. Parallel transmission is used for shorter distance and provides greater speed. While, serial transmission is reliable for transferring data to longer distance.

In synchronous communication, block of data (or characters) are transferred at a time. In asynchronous communication, single byte (or bit) is transferred at a time. There are special ICs used for this communication such as UART and USART. The microcontroller IC such as 8051 consists of in-built UART chip.

PISO and SIPO shift registers are used to convert serial data into parallel data and vice versa. Benefits or advantages of Serial Interface Following are the benefits or advantages of Serial Interface: ➨It uses less number of conducting wires, hence reduces cost of the interface. ➨It supports long distance data communication. ➨It uses less number of wires often only one, this leads to simple interface between transmitting and receiving devices or ICs.

It is easy to implement. Drawbacks or disadvantages of Serial Interface Following are the disadvantages of Serial Interface: ➨It uses less number of lines for transmission between devices. Hence it supports slower speed of transmission.

➨It occupies overhead of about 20% other than useful information. This leads to wastage of bandwidth meant for data trasmission for useless stuff. Also refer advantages and disadvantages of type. Advantages and Disadvantages of other wireless technologies.

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