Parallel communication is a method of data transmission where multiple bits of information are sent simultaneously over separate channels. This approach allows for faster data transfer compared to serial communication, where bits are sent one after another. Parallel communication is commonly used in computer systems, particularly in connections like Parallel ATA for hard drives and printer ports. In parallel communication, each bit is transmitted on its own wire, which can lead to increased speed but also introduces challenges such as crosstalk and signal degradation over longer distances. As a result, parallel communication is often limited to short-range applications, while serial communication is preferred for longer distances due to its simplicity and reliability.