Parallel ports are probably the easiest to use and work with as they are fast and mostly problem free. Parallel ports have remained unchanged for a long period of time but they have extended their capabilities to exchange data faster and more reliably.
The functioning of a parallel port takes place by sending its information in parallel signal wires. By sending the signal through 8 separate wires faster communication can be achieved than with a serial port that send its information through 2 wires. Theoretically, it looks like the parallel port would be 8 times faster, but in practice, the increase in speed is much greater, since there is no wait times for encoding and decoding of the serial signal.
Simple parallel ports typically send their data at 115,200 bits per second and new enhanced parallel ports will go up to 100 times faster.
