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COM (hardware interface)

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COM (Communication port) is the original, yet still common, name of the serial port interface on IBM PC-compatible computers. [1]

17 relations: Bluetooth, Computer, Device file, FTDI, Hardware register, IBM PC compatible, Input/output base address, Integrated circuit, Interrupt request (PC architecture), Memory-mapped I/O, Parallel port, Pin header, RS-232, Serial port, Symbol rate, USB, 16550 UART.


Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485GHz) from fixed and mobile devices, and building personal area networks (PANs).

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A computer is a device that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming.

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Device file

In Unix-like operating systems, a device file or special file is an interface to a device driver that appears in a file system as if it were an ordinary file.

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Future Technology Devices International, commonly known by its acronym FTDI, is a Scottish privately held semiconductor device company, specializing in Universal Serial Bus (USB) technology.

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Hardware register

In digital electronics, especially computing, hardware registers are circuits typically composed of flip flops, often with many characteristics similar to memory, such as.

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IBM PC compatible

IBM PC compatible computers are computers similar to the original IBM PC, XT, and AT, able to use the same software and expansion cards.

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Input/output base address

In the x86 architecture, an input/output base address is the first address of a range of consecutive read/write addresses that a device uses on the x86's IO bus.

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Integrated circuit

An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, normally silicon.

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Interrupt request (PC architecture)

In a computer, an interrupt request (or IRQ) is a hardware signal sent to the processor that temporarily stops a running program and allows a special program, an interrupt handler, to run instead.

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Memory-mapped I/O

Memory-mapped I/O (MMIO) and port-mapped I/O (PMIO) (which is also called isolated I/O) are two complementary methods of performing input/output (I/O) between the central processing unit (CPU) and peripheral devices in a computer.

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Parallel port

A parallel port is a type of interface found on computers (personal and otherwise) for connecting peripherals.

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Pin header

A pin header (often abbreviated as PH, or simply header) is a form of electrical connector.

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In telecommunications, RS-232, Recommended Standard 232 is a standard introduced in 1960 for serial communication transmission of data.

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Serial port

In computing, a serial port is a serial communication interface through which information transfers in or out one bit at a time (in contrast to a parallel port).

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Symbol rate

In digital communications, symbol rate, also known as baud rate and modulation rate, is the number of symbol changes, waveform changes, or signaling events, across the transmission medium per time unit using a digitally modulated signal or a line code.

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USB (abbreviation of Universal Serial Bus), is an industry standard that was developed to define cables, connectors and protocols for connection, communication, and power supply between personal computers and their peripheral devices.

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16550 UART

The 16550 UART (universal asynchronous receiver/transmitter) is an integrated circuit designed for implementing the interface for serial communications.

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Redirects here:

0x3F8, COM 1, COM 2, COM port, Com1.


[1] https://en.wikipedia.org/wiki/COM_(hardware_interface)

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