Parallel transmission refers to the simultaneous transmission of data on multiple parallel channels in groups. The characteristics of parallel transmission are: fast transmission speed and simple control method; however, the transmission is unstable and data is easily lost. Parallel transmission is only suitable for short distances and applications requiring fast transmission speed.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
The characteristics of parallel transmission are: fast transmission speed and simple control method; however, the transmission is unstable and data is easily lost.
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Parallel transmission refers to the simultaneous transmission of data in groups on multiple parallel channels. It is commonly used to transmit several binary codes that constitute a character on several parallel channels at the same time. In addition, a control signal is added, a "strobe" pulse, which is transmitted after the data signal is sent to notify the receiving device that all bits have been sent and the signals on each channel can be sampled.
This type of transmission is relatively simple. For an 8-bit microprocessor, 8 bits of data are transmitted at the same time. The data processed by the microprocessor itself is processed in parallel, so there is no need to change the format of the data. Therefore, the interface circuit that implements this type of transmission is relatively simple.
During parallel transmission, one character can be transmitted at a time, and there is no synchronization problem between the sending and receiving parties. It's fast and easy to control. However, parallel transmission requires multiple physical channels. Therefore, parallel transmission is only suitable for short distances and applications requiring fast transmission speed.
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