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The serial DCD pin can be used to accurately detect a PPS signal, as described in RFC 2783: [1] One convenient means to provide a PPS signal to a computer system is to connect that signal to a modem-control pin on a serial-line interface to the computer. The Data Carrier Detect (DCD) pin is frequently used for this purpose.
The IBM PC implements its serial ports, when present, with one or more UARTs. Very low-cost systems, such as some early home computers, would instead use the CPU to send the data through an output pin, using the bit banging technique. These early home computers often had proprietary serial ports with pinouts and voltage levels incompatible with ...
COM port (DE-9 connector). COM (communication port) [1] [2] is the original, yet still common, name of the serial port interface on PC-compatible computers. It can refer not only to physical ports, but also to emulated ports, such as ports created by Bluetooth or USB adapters.
Examples of computer connector sockets on various laptops Ports on the back of the Apple Mac Mini (2005). A computer port is a hardware piece on a computer where an electrical connector can be plugged to link the device to external devices, such as another computer, a peripheral device or network equipment. [1]
Today, serial consoles are often used for accessing headless systems, usually with a terminal emulator running on a laptop. Also, routers, enterprise network switches and other telecommunication equipment have RS-232 serial console ports. On PCs and workstations, the computer's attached keyboard and monitor have the equivalent function. Since ...
The computer's console can be accessed through a network connection such as the Internet, using protocols such as telnet or SSH. Remote desktop Allows a graphical user interface to be accessed through remote access even without a monitor. KVM switch Multiple computers are connected to a single display device which can be switched between computers.
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As management via serial port has traditionally been important on servers, a complete remote management system also allows interfacing with the server through a serial over LAN cable. As sending monitor output through the network is bandwidth intensive, cards like AMI's MegaRAC use built-in video compression [ 2 ] (versions of VNC are often ...
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