Communication interface transmitting information sequentially
A male D-subminiature connector used for a serial port on an IBM PC compatible computer along with the serial port symbol
A serial port is a serial communication interface through which information transfers in or out sequentially one bit at a time.[1] This is in contrast to a parallel port, which communicates multiple bits simultaneously in parallel. Throughout most of the history of personal computers, data has been transferred through serial ports to devices such as modems, terminals, various peripherals, and directly between computers.
While interfaces such as Ethernet, FireWire, and USB also send data as a serial stream, the term serial port usually denotes hardware compliant with RS-232 or a related standard, such as RS-485 or RS-422.
Modern consumer personal computers (PCs) have largely replaced serial ports with higher-speed standards, primarily USB. However, serial ports are still frequently used in applications demanding simple, low-speed interfaces, such as industrial automation systems, scientific instruments, point of sale systems and some industrial and consumer products.
Server computers may use a serial port as a control console for diagnostics, while networking hardware (such as routers and switches) commonly use serial console ports for configuration, diagnostics, and emergency maintenance access. To interface with these and other devices, USB-to-serial converters can quickly and easily add a serial port to a modern PC.
A serialport is a serial communication interface through which information transfers in or out sequentially one bit at a time. This is in contrast to...
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way the data is sent; parallel ports send multiple bits of data at once (parallel communication), as opposed to serial communication, in which bits are...
communication protocol. The form of connectors depends on the particular serialport used. A cable wired for connecting two DTEs directly is known as a null...
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connect to a serialport. The name "PuTTY" has no official meaning. PuTTY was originally written for Microsoft Windows, but it has been ported to various...
Serial Peripheral Interface (SPI) is a de facto standard (with many variants) for synchronous serial communication, used primarily in embedded systems...
another computer, via a connection using either the serialport, parallel port or the infrared port of each computer. It is well-suited for computers that...
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several devices can be used as system console: a virtual terminal, serialport, USB serialport, VGA in text-mode, framebuffer. Some modern Linux-based systems...
digital simulation. It specifies the use of a dedicated debug port implementing a serial communications interface for low-overhead access without requiring...
programming hardware, including Atmel AVRISP mkII, Atmel JTAG ICE, older Atmel serial-port based programmers, and various third-party and "do-it-yourself" programmers...
early Macintosh computers. Two serialports were provided primarily to support a printer and modem, and a floppy port connector supported a single external...
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