What is COM and LPT ports?

What is COM and LPT ports?

​COM port also known as a serial port transmits data bit by bit LTP port also known as a parallel port transmits multiple bits simultaneously at a time.or. LPT is a parrallel port typically associated with old printers. COM is a serial port assiciated with older interace devices like mice, PDAs, etc.

How do I enable parallel ports in BIOS?

Alternative solution

  1. Enter the BIOS by pressing F2 while the computer is starting up.
  2. In the BIOS setup screen, press the Down Arrow key repeatedly until you have highlighted Integrated Devices.
  3. Press the Down Arrow key repeatedly until Parallel Port is highlighted.

How do I change my LPT port number?

Expand the Ports (COM & LPT) section. Right-click the COM port and select Properties. Click the Port Settings tab and click Advanced. Change the COM port number to an available COM port number.

How do I find the LPT port address?

To open the Device Manager, click Start, point to Settings, and then click Control Panel. Double-click System. On the Hardware tab, click Device Manager. In the Device Manager, LPT Ports ( Printer Ports ) are listed under Ports (COM & LPT) ( in Devices by type view ).

How do I find the LPT port on my computer?

The LPT port or parallel port is found on the back of the computer and is part of the motherboard. Most of today’s computers are eliminating the parallel port in favor of USB ports.

How many LPT ports are there?

LPT port The name of a parallel printer port on an IBM PC or compatible. There can be up to three of these ports, called LPT1, LPT2, and LPT3.

How do I know if my LPT port is working?

Click the Hardware tab, and then click Device Manager. Click to expand Ports, right-click Printer Port (LPT1), and then click Properties. If have more than one printer port installed on your computer, click LPT2 or LPT3. Click the Port Settings tab, click Enable legacy Plug and Play detection, and then click OK.

Which command is used to turn on LPT port?

Sending MS-DOS command output to a printer This command tells the computer to reroute all information to the appropriate LPT port, x represent the port number.

Where is LPT1 on my laptop?

The LPT port or parallel port is found on the back of the computer and is part of the motherboard.

How do I open an LPT port?

What is address 0x378 and how to write to it?

Usually, (by default) address 0x378 is the address of the parallel port LPT0 in memory, so you it’s just a matter of using inb and outp to read/write to this address.

What is the I/O address for the LPT1 port?

The LPT1 port is typically at I/O-address 378h or 3BCh. To get to know the port address to use you can use for example the method: On modern Windows systems (I tested in Windows 2000) you can get to know the parallel port I/O addrss through device manager.

What is the difference between LPT1 and COM ports?

LPT is parallel port, and COM is serial. But I’m not sure I can understand your question. What does “address” mean? Would you explain it? Ashidacchi >> http://hokusosha.com/ By “address” I mean that I’m looking for the base address. I’ve seen an example of one for an LPT1 port with an address of 0x378.

Is it possible to add code to an LPT?

If you are referring to adding code in the development software, the software itself only allows using the standard ISA addresses for LPT and adding code in the software will not work. Yes I have contacted Siig.

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