What is parallel port interfacing?
A parallel port is an interface allowing a personal computer (PC) to transmit or receive data down multiple bundled cables to a peripheral device such as a printer. The most common parallel port is a printer port known as the Centronics port.
What is the best parallel port mode?
However, if the parallel port is enabled, you should configure it to run in EPP (enhanced parallel port) or ECP (enhanced capabilities port) mode. EPP mode is recommended if the system has just one device, such as a printer, plugged into its parallel port.
What is parallel port ECP?
EPP/ECP (Enhanced Parallel Port/Enhanced Capability Port) is a standard signaling method for bi-directional parallel communication between a computer and peripheral devices that offers the potential for much higher rates of data transfer than the original parallel signaling methods. EPP is for non-printer peripherals.
What is the name of the parallel port?
A parallel port, also known as a Centronics port, Centronics interface, or Centronics connector, is an external interface that was used to connect peripheral devices such as printers.
What is parallel port address?
Parallel Port Registers Communication between the PC and the interface is achieved using only four bits residing in three registers (see Table 1). The default base address for the parallel port (LPT1) is typically 378h. Two other possible locations are 3BCh and 278h.
How do I configure a parallel port for USB?
The USB to parallel printer cable allows your PC to print to most parallel printer device connected through the USB port. Just plug the USB connector of the cable into the USB port of your PC and the other end into the Centronics connector of the parallel printer.
What is a bidirectional parallel port?
[‚bī·də‚rek·shən·əl ‚par·ə‚lel ′pȯrt] (computer science) A parallel port that can transfer data in both directions, and at speeds much greater than a standard parallel port.
What is ECP node?
The Extended Capabilities Port (ECP) is a parallel port for personal computers (PCs) that supports bi-directional communication between a computer and a peripheral device such as a printer.
Are parallel ports bidirectional?
All parallel ports are capable of bidirectional data flow. However, the original Centronics design, used on the first IBM PCs, was not designed for efficient data transfer back to the computer.
Here a simple tutorial on parallel port interfacing and programming with some examples. Everybody knows what is parallel port, where it can be found, and for what it is being used. the primary use of parallel port is to connect printers to computer and is specifically designed for this purpose.
How to access the port in Turbo C?
In Turbo C, there are following functions used for accessing the port: outportb( PORTID, data); data = inportb( PORTID); outport( PORTID, data); data = inport( PORTID); outport() function sends a word to port, inport() reads a word from the port.
How to make parallel port capable of communicating with other devices?
But latter, to make parallel port capable of communicating with other devises, bidirectional ports are introduced. By default, data port is output port. To enable the bidirectional property of the port, we need to set the bit 5 of control register.
What are bidirectional parallel ports in a printer?
Earlier parallel ports had only output enabled in data pins since printers only inputs data. But latter, to make parallel port capable of communicating with other devises, bidirectional ports are introduced. By default, data port is output port.