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IRQ 3 is for COM2 and COM4 (serial ports). See related link.
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∙ 13y ago
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How can you test serial port communication with 89c52?
write a serial port program.then by shorting transmission and reception pin check whether interrupt has occured or not.....like that we can check serial port communication......... regards Parvathy
What is irq3 used for?
IRQ Interrupt Request 3 are usually reserved for COM port (1,2,3,4) but can be assigned to anything.Interrupts are a commonly used technique for computer multitasking, especially in real-time computing. Such a system is said to be interrupt-driven.An act of interrupting is referred to as an interrupt request (IRQ
What is irq2 used for?
IRQ2 is used by old modems, and older video cards as an alternativeÊ IRQ for the third serial port or fourth serial port. It is used to cascade the second interrupt controller to the first.
If ECP mode does not work on your parrell port what should you do next?
As much as possible keep the default setting of ECP; otherwise, you can also select an IRQ (interrupt request) line for the port.
What is the most common port on computers today?
The most common Serial porty is the DB port also know as D-sub or D-subminiature port. USB is not serial port.
Where is serial number on a Savage 745?
The serial number is located just forward of the loading port on the bottom of the receiver.
What does mean by COM 1 port?
COM 1 means SERIAL port number 1
Where is the Serial Number for the M50 mask?
On the left cannister connection port.
When would you disable the serial port?
In the past, both the serial and parallel port were the most common means of data transfer and communication used by PCs. Serial ports were used for devices such as modems, mice, and serial port printers. However, in newer PCs, both the serial and parallel ports have been replaced by the use of USB ports. You should only disable serial port(s) if you are absolutely certain that auxiliary devices such as modems; printers; mice; etc.. are USB based and that your PC has enough USB ports to accommodate all of your auxiliary devices. Note: If at some point in the immediate future, you plan to sell your PC, it might be wise to leave the serial port as is.
What is the advantage of using interrupt initiated data transfer?
It does not require the continuous checking of I/O port by the computer . The computer checks the port only when an I/O interrupt is encountered . It saves processing time.
Is VGA port a serial port?
No. VGA port is not either serial or parallel port. It is a different interface. If you need a serial output, you need a VGA to serial converter.
After a web browser makes a request to a web server that is listening to the standard port what will be the source port number in the TCP header of the response from the server?
Port 80
