It is also used by the serial ports in your computer. RS232 is a very popular serial communication protocol used in many devices. How can you implement serial communication through hardware? There are two very common serial communication hardware – RS232 and TTL which we will discuss in the next section. Hardware Implementation of Serial Communication
#Serial communication types full#
So, which one’s better? Parallel communication might sound like a better option because of its high speed but practically, serial communication is the wiser choice because it supports full duplex communication and that has better applications in microcontroller based projects. An example of serial communication is transmission of data between two computers whereas communication between a computer and printer is parallel communication. Since parallel communication allows multiple bits to be transmitted at the same time, it requires more number of wires hence is expensive as compared to serial communication. Using parallel communication, you can send more number of bits at the same time which means you can achieve a greater baud rate. Sending information one bit at a time is called serial communication and sending them side by side, at the same time is termed as parallel communication. Now that you know what serial communication is, let’s talk about parallel communication. Mobile phone calls are the best example of a full-duplex configuration Serial vs.
Full-Duplexįull-duplex is a two-way communication between a sender and a receiver where both the parties can send and receive signals at the same time. An example of a half-duplex is a walkie talkie, formally known as a two-way radio where only one person at a time can talk, the other person has to wait until the first one finishes talking. When the sender transmits a signal to the receiver, the receiver cannot respond back at the same time. This mode of transmission is a partial two-way communication where a device can send and receive signals but not at the same time. The listeners cannot respond back to the radio station. A classic example of simplex is the radio where only the radio station transmits signals and the listeners receive it. the sender can only send signals to the receiver and not receive anything. Simplex involves one-way communication i.e. These configurations have the same elements (transmitter, receiver and communication channel) yet they differ from one another. Serial communication can be configured in three different ways namely simplex, half-duplex and full-duplex. Both devices must have a TX (transmitter) and an RX (receiver) pin and the TX pin of the sender must be connected to the RX pin of the receiving device. Serial communication requires two serial devices – a sender and a receiver. Since the transmission of bits is continuous, these bits act as markers between successive packets of information. They are used for error detection and correction in serial communication. There are four types of parity bits – odd, even, spaced and marked. a higher baud rate means that the transmission is faster because more number of bits are travelling from the sender to the receiver. It allows us to measure the speed of transmission i.e. Here is a brief explanation of these parameters: Baud Rateīaud rate is a measure of the number of bits transmitted in one second. There are certain parameters that need to be understood before we move towards knowing how serial communication works. The special part about serial communication is that the bits are transferred one after the other which means that a single bit is transmitted in one time slot. In simple words, it is the transfer of bits between two parties, over a single wire. Serial communication is a two-way transfer of data between a transmitter and a receiver, using a single communication channel. This article will walk you through a detailed introduction of serial communication, its types and how you can implement it using Arduino. Are you a beginner looking for some insight on serial communication? If yes, then you’ve landed on the right page.
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