This new technology, known as the daisy chain that could have the ability to transfer data at high rates on the same bus. The faster interfaces were introduced by the FireWire and the Universal Serial Bus (USB). Higher speed communication, such as external data storage units, was required for serial communication. The standard utilised 25 pins since many of the connectors were large and underused, and the smaller DE-9 connector became popular. The RS-232, a serial port standard, is used to transmit serial communication between devices, commonly called DTE (data terminal equipment) and DCE (data terminal equipment). System resource configurations are identified by COM1, COM2, COM3, COM4, and more each COM position characterizes an interrupt request (IRQ) address as sell as an input/output (I/O). Serial ports have been replaced in the newer computer by much faster and more compatible USB ports. A serial port is a male port that can only send one bit of data at a time, whereas a parallel port is a female port that can send several bits at the same time. There are two kinds of serial ports: DB25 and DB9, where DB25 is a 25-pin connection, and DB9 is a 9-pin connection. Sometimes it is also known as RS-232 port or COM port, and its data transfer rate is slower as compared to a parallel port. The below picture is an example of a DB9 serial connector on a cable.
Modern serial ports are used in industrial machinery systems and scientific instruments and are usually found on IBM-compatible computers as COM (communications) ports.
For instance, a modem might connect to communication port 1 and a mouse to communication port 2.
It is commonly used to connect peripherals such as game controllers and mice to a computer, and it was once used to connect printers and external modems.
It is a type of connection on PCs, which is one of the oldest types of interfaces. A serial port on a computer is an asynchronous port that connects a serial device to the computer and allows the computer to transfer or receive data one bit at a time.
0 kommentar(er)
