What is a serial communication interface?

The serial communication interface (SCI) is a means by which computer components can communicate with each other. This can be in the computer itself, for example from an integrated microchip via a serial board or an expansion card or cable to an external device such as a keyboard or printer. Serial interfaces are also used for some computer network technologies.

Details of the serial communication interface are discussed in the recommended standard 232 (RS-232), which was originally designed in 1962 by a group of standards, which eventually became known as the Association of Electronic Industry (EIA). The RS-232 describes the data terminal device (DTE) at one end of the serial communication (DTE) and the data circuit (DCE) device at the opposite end. The standard also describes voltage levels and other electrical attributes for signal, identification of pegs for physical interface, circuit functions and more.

from RS-232 Standard, one of the early developed serial communication rOzhrají, is what is known as a universal asynchronous receiver and transmitter (UART). The first UART provided resources for telethypical machines to transmit small five -liter sequences known as Baudot Codes. Later, as the use of a digital computer increased, the American standard information standard for information exchange (ASCII) described the 8 -bit coding characters that were transmitted in series between computers through integrated circuits and serial interfaces around 1971.

6 Bits are sent to the second after the second, with the initial beating that you initiate communication, followed by data bits and a stop bit that closes the transmission. Depending on the use, a control bit, called parity, can also be inserted into the sequence to ensure that the data is made intact. ThisThe data framing method of data transmission within BIT and Stop allows asynchronous communication. The serial interface is not obliged to stay in time with the synchronized hours, but instead it is allowed to send the framework at any given moment that the recipient can recognize.

Serial communication interface technology has found use in many areas. One of the very popular method is the universal serial bus (USB) for connecting peripheral devices to the computer. Inside computer attachments, hard disk units sometimes use the interface known as serial advanced technological connection (serial ATA) for high -speed communication with the computer processor. Many expansion cards use another type of serial interface called Peripheral Component Interconnect Express (PCI-E). Nevertheless, the serial communication interfaces remember their roots and are also used in conventional Ethernet network environments, as well as in high -speed optics.