Since its launch, the parallel port - also known as Centronics port - has been synonymous with printer port.
Although a serial port can also be used to send data from PC to some printer models, the door
Parallel is faster.
A serial port sends data one bit at a time over a single wire.
A parallel port can
send multiple data bits through eight parallel wires simultaneously as soldiers marching side by side.
The same
time a serial connection sends a single bit, a parallel port is able to send a byte integer.
Or, another
approach, while a serial connection sends the letter A, a parallel port can send the word pin.
A parallel connection is a limitation.
The voltages on all its lines to generate crosstalk, a phenomenon which causes
tension fade up from one line to another, the same thing that happens when you hear a third person interfering
their telephone conversation.
The larger the cable the greater the interference.
The maximum limit for a parallel cable is 10 feet
(Approximately 3m).
Some older printers and plotters used the serial ports as a means of communication.
But today, as
vector fonts and graphics features that have become common in most printed documents, there is need for greater
amount of data is sent to the printer, making the parallel port the only option available.
In addition, the doors
parallel are used to transport files between two PCs, and the popularity of laptops - many
often are deficient in terms of expansion slots - created a market for peripherals such as disk drives and
sound generators that use parallel ports.
Source: Evolution of Computers
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