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Parallel Port Interfacing

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by

Christine Manrique

on 5 September 2014

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Transcript of Parallel Port Interfacing

ACTIVITY!!!
Serial
VS.
Parallel
SERIAL PARALLEL
- has single data wire - has 8 data wires
- transfers bit one at a time - transfer several bits at
a time
- Crosstalk is an issue - prone to crosstalk
- Clock skew is not a concern - suffers extremely from
noise

Parallel Port
A parallel port is a type of interface found on computers (personal and otherwise) for connecting peripherals. It is also known as a printer port or Centronics port, after the company that originally designed it, the port was later developed by Epson.
Parallel Port
The parallel port interface was originally known as the Parallel Printer Adapter on IBM PC-compatible computers. It was primarily designed to operate a line printer that used IBM's 8-bit extended ASCII character set to print text, but could also be used to adapt other peripherals. Graphical printers, along with a host of other devices, have been designed to communicate with the system.
Parallel Port Interfacing
Interfacing
- an interface is a shared boundary across which two separate components of a computer system exchange information. The exchange can be between software, computer hardware, peripheral devices, humans and combinations of these.
Parallel Port Interfacing
A parallel interface refers to a multiline channel, each line capable of transmitting several bits of data simultaneously. Most commonly, personal computers (PCs) have at least one parallel interface for connecting a printer using a parallel port.
HARDWARE

- Parallel port (DB 25)
- connecting wires
- LEDs or any output devices


SOFTWARE

- VC++ for writing the parallel port interfacing program
USES and Application
Parallel Port Interfacing
Parallel Port Interfacing
Full transcript