Table of Contents
1. Which is the computer com1 port?
2. Which port is the computer com1 port?
3. Where is the COM1 port of the computer host? 1. Check whether the monitor cable is firmly and reliably inserted into the host interface, and then check whether the contact between the graphics card and the motherboard I/O slot is good. You can reinstall the graphics card once to ensure that the graphics card is in place and in good contact;
LPT is a virtual port. It is usually a computer path, such as \192.168.1.10HP 1020 or \PC201901121259hp m1005 and other LAN shared ports, and COM is a serial port. It is a physical interface such as a 9-pin or 25-pin parallel port.
is usually used to connect the mouse (serial port) and communication equipment (such as connecting an external MODEM for data communication). Today's PCs generally have two serial ports COM
6. 컴퓨터 com1 포트
7. com1 포트는 무엇을 의미하나요?
8. 컴퓨터의 어떤 com1 포트가 사용 중인지 확인하는 방법은 장치 관리자 오른쪽에서 "포트(COM 및 LPT)"를 찾으세요. )" 항목을 확장하여 확장합니다. , 현재 컴퓨터에 이미 존재하는 포트가 표시되며, 포트 번호는 괄호 안에 표시됩니다.
1. 통신 포트 매개 변수가 잘못 설정되었을 수 있습니다. 통신 속도, 데이터 길이, 패리티, 정지 비트 등의 매개변수를 동일하게 설정해야 성공적인 통신이 가능합니다. ;
Home Computer Tutorials Computer Knowledge Where can I find the computer port number com1 (which computer port is com1)

Where can I find the computer port number com1 (which computer port is com1)

Jul 15, 2024 pm 09:17 PM

Question: Can’t find the COM1 port on your computer? Introduction: In some cases, you may need to find the COM1 port on your computer, such as connecting legacy devices or debugging hardware. But the location of the COM1 port can be difficult to find because it is not directly visible. Read on: This article will give you a step-by-step guide on how to find the COM1 port on your computer, including finding it from Device Manager and Command Prompt. By following these steps carefully, you will be able to easily find the required port and proceed with your task.

Where can I find the computer port number com1 (which computer port is com1)

1. Which is the computer com1 port?

The method to query the computer com is as follows

1. On the computer desktop, find the computer, right-click and select Properties. ​

2. After opening the interface, select Device Manager on the left, and then you can find the port (COM and LPT) communication port (COM1) COM1 is the port in use. ​

COM port is the serial communication port. The COM port on the microcomputer is usually 9-pin, and there are also 25-pin interfaces with a maximum speed of 115200bps. It is usually used to connect the mouse (serial port) and communication equipment (such as connecting an external MODEM for data communication or some factory CNC machine interfaces), etc. Generally, there is only one COM port on the outside of the motherboard. The nine-hole output port (trapezoid) on the back of the chassis together with the parallel port is the COM1 port. The COM2 port is generally led out from the pins on the motherboard. The parallel port is the longest trapezoidal port.

2. Which port is the computer com1 port?

The COM interface refers to the Component Object Model interface, also called a serial port or serial interface. It is a standard interface defined by Microsoft. Today's PCs generally have two serial ports COM 1 and COM 2. The serial port is different from the parallel port in that its data and control information are transmitted bit by bit. Although this will be slower, the transmission distance is longer than the parallel port, so if you want to communicate over a longer distance, you should use the serial port.

Usually COM 1 uses a 9-pin D-shaped connector, also called RS-232 interface, while COM 2 sometimes uses an old-fashioned DB25-pin connector, also called RS-422 interface. The interface is now rarely used. The COM interface data cable must be a COM data cable on one end, and there are many forms on the other end, depending on the type you need.

3. Where is the COM1 port of the computer host? 1. Check whether the monitor cable is firmly and reliably inserted into the host interface, and then check whether the contact between the graphics card and the motherboard I/O slot is good. You can reinstall the graphics card once to ensure that the graphics card is in place and in good contact;

2. If the monitor and graphics card are installed securely, please try another monitor that is confirmed to be normal. If the screen is no longer black, the reason is that the monitor may be damaged;

3. The monitor is not damaged, please further check whether the CPU fan is running. If it is running, you can use a multimeter to measure whether the voltage output is normal ±12v, ±15v. If it is not normal, you can try another power supply;

4. If a black screen still appears, you can remove the power supply other than the CPU, graphics card, and memory module. Remove all components, then power up the computer. If the memory is faulty, there should be an alarm sound. If it is not due to memory, please change to a normal CPU and start the test again. If a black screen still appears, you can only replace the motherboard, and the problem should also appear on the motherboard;

5. When the system is normal, check whether software has been installed and patches have been updated. If so, please uninstall the update file;

6. Sometimes the computer screen goes black because software is installed and is being updated, just wait;

7. System files are accidentally deleted, causing the system to fail to start normally. You can see if you can enter safe mode. If not, reinstall the system. .

4. Which is the com1 port of the desktop computer?

LPT is a virtual port. It is usually a computer path, such as \192.168.1.10HP 1020 or \PC201901121259hp m1005 and other LAN shared ports, and COM is a serial port. It is a physical interface such as a 9-pin or 25-pin parallel port.

5. The com1 interface of desktop computers

is usually used to connect the mouse (serial port) and communication equipment (such as connecting an external MODEM for data communication). Today's PCs generally have two serial ports COM

1 and COM

2. 직렬 포트는 데이터와 제어 정보가 비트 단위로 전송된다는 점에서 병렬 포트와 다릅니다. 속도는 느리지만 전송 거리가 병렬 포트에 비해 길기 때문에 더 먼 거리에서 통신하려면 직렬 포트를 사용해야 합니다. 일반적으로 섀시는 두 개이지만 새 섀시에는 하나만 있을 수도 있습니다. 노트북에는 없을 수도 있습니다. 이를 표준 통신 포트로 사용하는 산업용 장비가 많이 있습니다. 통신 내용과 형식은 일반적으로 기기의 사용 설명서에 첨부되어 있습니다. 확장 정보: 1. 인터페이스의 신호 내용: 실제로 RS-232-C의 25개 리드 중 대부분은 거의 사용되지 않습니다. 일반적으로 컴퓨터와 터미널 통신에는 3-9개 리드만 사용됩니다. 2. 인터페이스의 전기적 특성: RS-232-C에서는 모든 신호 라인의 전압이 음의 논리 관계를 갖습니다. 즉, 논리 "1", -5--15V, 논리 "0" +5- +15V입니다. 잡음 마진은 2V이다. 즉, 수신기는 논리 "0"으로 +3V만큼 낮은 신호를 인식하고 논리 "1"로 -3V만큼 높은 신호를 인식해야 합니다. 3. 인터페이스의 물리적 구조: RS-232-C 인터페이스 커넥터는 일반적으로 사용됩니다. 모델 DB-25핀 플러그 소켓은 일반적으로 플러그가 DCE 끝에 있고 소켓은 DTE 끝에 있습니다. 일부 장치는 PC의 RS-232-C 인터페이스에 연결됩니다. 상대방의 전송 제어 신호를 사용하지 않기 때문에 "데이터 전송", "데이터 수신" 및 "신호 접지"의 세 가지 인터페이스 라인만 필요합니다. 따라서 DB-9의 9핀 플러그 소켓을 사용하고, 전송선로는 쉴드 연선을 사용합니다.

6. 컴퓨터 com1 포트

COM은 에어컨 회로기판의 COM 포트(클러스터 통신 포트)를 의미하는데, 직렬 통신 포트라고도 합니다.

컴퓨터의 직렬 포트는 일반적으로 9핀이며 최대 속도 115200bps의 25핀 인터페이스도 있습니다. 일반적으로 마우스(직렬 포트)와 통신 장치(예: 일부 공장의 데이터 통신을 위한 외부 모뎀 또는 CNC 인터페이스)를 연결하는 데 사용됩니다.

보통 마더보드 외부에는 직렬 포트가 하나만 있습니다. 섀시 뒷면의 9홀 출력 단자(사다리꼴)와 병렬 포트가 COM1 포트입니다. 병렬 포트는 가장 긴 래더 포트입니다. 그러나 현재 주류 마더보드에는 일반적으로 직렬 포트가 1개만 있거나 전혀 없기 때문에 점차 USB로 교체될 것입니다.

주요 기능: 직렬 인터페이스 표준 사양 및 버스 표준 사양은 RS-232이며 때로는 RS-232라고도 합니다.

확장 정보:

9핀 직렬 포트 핀 기능: 반송파 감지 "CD", 데이터 수신 "RXD", 데이터 전송 "TXD", 데이터 터미널 준비 "DTR", 데이터 준비 "DSR", 전송 요청 " RTS" , "CTS" ", 링 표시기 "RI"

7. com1 포트는 무엇을 의미하나요?

일반 컴퓨터에는 직렬 포트라는 두 개의 COM 포트가 있는데, 설치 중에 하나를 사용하고 있으면 변경할 수 있습니다.

때때로 설치 소프트웨어에서 com1이 사용 중이라는 메시지를 표시합니다. 이는 시스템 인터럽트 충돌일 수 있습니다.

또 다른 해결책은 com 포트 하드웨어를 USB 인터페이스로 변환하는 변환기를 구입하는 것입니다. 인터페이스가 강력하고 COM 포트를 사용할 필요가 없습니다.

8. 컴퓨터의 어떤 com1 포트가 사용 중인지 확인하는 방법은 장치 관리자 오른쪽에서 "포트(COM 및 LPT)"를 찾으세요. )" 항목을 확장하여 확장합니다. , 현재 컴퓨터에 이미 존재하는 포트가 표시되며, 포트 번호는 괄호 안에 표시됩니다.

COM1은 마더보드 후면에 있는 RS232 인터페이스이고 COM3은 마더보드의 직렬 포트입니다. 컴퓨터에 연결한 마이크로컨트롤러 개발 보드 세트입니다. COM10과 COM11은 모두 소프트웨어 가상 포트입니다. 실제 포트 번호와 포트 번호를 참조하세요. .com1 포트 번호

를 사용할 수 없는 이유 :

1. 통신 포트 매개 변수가 잘못 설정되었을 수 있습니다. 통신 속도, 데이터 길이, 패리티, 정지 비트 등의 매개변수를 동일하게 설정해야 성공적인 통신이 가능합니다. ;

3. 통신 케이블이나 9핀 DP 커넥터가 손상될 수 있습니다.

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