What is LPTI in computers?

Answer 1

I will assume you meant LPT1 which is the first parallel port on older PC's. It was normally used for connecting printers and scanners. MAny newer PC's have done away with the LPT ports in favor of the faster and more flexible USB interfaces.

Answer 2

Probably you mean LPT 1 which is Parallel Port 1. That's where many older printers are plugged into - it's the wide 20-pin connector in the back of your computer. However, most new printers are plugged into a USB port which is the small rectangular connectors.

Toodles

Answer 3

LPT is the original, yet still common, name of the parallel port interface on IBM PC-compatible computers. It was designed to operate a text printer that used IBM's 8-bit extended ASCII character set. The name derives from the fact that "line printer" was a common generic term at the time for any type of text printer. Graphical printers, along with a host of other devices, have been designed to communicate with the system. It was a de facto industry standard for many years, and was finally standardized as IEEE 1284 in the late 1990s. Today, the parallel port interface is seeing decreasing use because of the rise of Universal Serial Bus (USB) and FireWire (IEEE 1394) devices.

Most PC-compatible systems in the 1980s and 1990s had one or two ports, with communication interfaces defined like this:

LPT1: I/O port 0x378, IRQ 7
LPT2: I/O port 0x278, IRQ 5
Some systems also had an LPT3 port, but this was less-consistently defined. In reality, computers rarely had more than one LPT port.

A wide variety of devices were eventually designed to operate on a parallel port. Most were uni-directional (one-way) devices, only meant to respond to information sent from the PC. However, some devices such as Zip drives were able to operate in bi-directional mode. Printers also eventually took up the bi-directional system, allowing various status report information to be sent.

In MS-DOS and PC-DOS, the parallel ports could be accessed directly on the command line. For example, the command "type c:\autoexec.bat > LPT1" would direct the contents of the autoexec.bat file to the printer port. A PRN device was also available as an alias for LPT1. A special "print" command also existed to achieve the same effect. Microsoft Windows still refers to the ports in this manner in many cases, though this is often fairly hidden.

An LPT port has an 8-bit parallel databus, plus 4 pins for control output (Strobe, Linefeed, Initialize, and Select In), and 5 more for control input (ACK, Busy, Select, Error, and Paper Out). Its data transfer speed is at 12,000 kbit/s.

It is actually fairly unclear exactly what "LPT" stands for. Sources have variously mentioned Line Printing Terminal, Line PrinTer, and Local PorT. According to the Jargon File, a similar port naming convention was used on ITS, DEC systems, and CP/M.

---From Wikipedia, the free encyclopedia

Answer 4

I seriously forget what the letter L, P, and T stand for, but LPT1 would be your parallel printer port. COM1 is your serial port. Like the names suggest, a serial cable sends info into the system on bit at a time in series, but parallel send multiple bits per processor cycle in parallel. Since printers usually require more information than say an old mouse, the parallel ports were designed for printers. Although USB is making both types of ports die in usage.

Answer 5

LPT1 is what the old (before USB became the norm) printer ports were called. Typically they are the largest connector on the back of the motherboard...but its the printer output port.

Answer 6

LPT1 is printer port. It is a parellel port #1 where you connect your printer. It is a 25-pin connector purple in color. But now a days printers are connected in usb ports

Answer 7

it's actually LPT1. it's a printer port designation from way back when - line printer 1, line printer 2, etc.

Answer 8

LPT (local printer port)
thats all nothing to worry.

Answer 9

LPT1 is cable port

Answer 10

its an old printer and scanner port