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A male D-subminiature connector used for an RS-232 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]
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.
RS-232 ports are also commonly used to communicate to headless systems such as servers, where no monitor or keyboard is installed, during boot when an operating system is not yet running and therefore no network connection is possible. A computer with an RS-232 serial port can communicate with the serial port of an embedded system (such as a ...
PC World called the M52 desktop, "A corporate machine for the security conscious business user looking for stability and reliability". [4] The M52 desktop was equipped with a 3 GHz Pentium 4 processors, an 80 GB hard disk drive, up to 4 GB of RAM, eight USB 2.0 ports, two serial ports, a Gigabit Ethernet connection, VGA output, and a chassis ...
For instance, most computers have a keyboard port (currently a Universal Serial Bus USB-like outlet referred to as USB Port), into which the keyboard is connected. Physically identical connectors may be used for widely different standards, especially on older personal computer systems, or systems not generally designed according to the current ...
Keyboard and mouse cables and ports are almost invariably serial—such as PS/2 port, Apple Desktop Bus and USB. The cables that carry digital video are also mostly serial—such as coax cable plugged into a HD-SDI port, a webcam plugged into a USB port or FireWire port , Ethernet cable connecting an IP camera to a Power over Ethernet port, FPD ...
Frequent use of a serial port is for a direct computer-to-computer connection. This requires an adapter called a null modem, which isn't actually a modem in the traditional sense, but rather a connector plug that simply crosses the complementary pins on two serial ports so the two sides can communicate. A null modem typically connects the DTR ...
Standard interface for many mini-computers in the 1970s and 1980s. SASI: Shugart Associates System Interface Word serial interface introduced by Shugart Associates circa 1978; Evolved by ANSI into SCSI (SASI is a compatible subset of the first version of SCSI). ST-506 ST-412 ST-412RLL Bit serial data interfaces introduced by Seagate Technology ...
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