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A universal synchronous and asynchronous receiver-transmitter (USART, programmable communications interface or PCI) [1] is a type of a serial interface device that can be programmed to communicate asynchronously or synchronously. See universal asynchronous receiver-transmitter (UART) for a discussion of the asynchronous capabilities of these ...
128-byte buffers. This UART can handle a maximum standard serial port speed of 921.6 kbit/s if the maximum interrupt latency is 1 millisecond. This UART supports 9-bit characters in addition to the 5- to 8-bit characters that other UARTs support. This was introduced by Oxford Semiconductor, which is now owned by PLX Technology.
A modulator-demodulator, commonly referred to as a modem, is a computer hardware device that converts data from a digital format into a format suitable for an analog transmission medium such as telephone or radio.
HTML Form format HTML 4.01 Specification since PDF 1.5; HTML 2.0 since 1.2 Forms Data Format (FDF) based on PDF, uses the same syntax and has essentially the same file structure, but is much simpler than PDF since the body of an FDF document consists of only one required object. Forms Data Format is defined in the PDF specification (since PDF 1.2).
Class definitions for Communication Devices 1.2 (.zip file format, size 3.43 MB) Class definitions for Communication Devices 1.1; App Note, Migrating from RS-232 to USB Bridge Specification. Explains the use of USB CDC (Communications Device Class) ACM (Abstract Control Model) to emulate serial ports over USB.
An asynchronous communication service or application does not require a constant bit rate. [2] Examples are file transfer, email and the World Wide Web. An example of the opposite, a synchronous communication service, is realtime streaming media, for example IP telephony, IPTV and video conferencing.
Universal communication format is a communication protocol developed by the IEEE for multimedia communication. Y. Hiranaka, H. Sakakibara and T. Taketa of Yamagata University proposed UCF in 2005. From the abstract: [1] Various intelligent equipments and software are gradually designed to communicate with other equipment or software.
It is typically used for serial communication and was rated for 19.2 kilobits per second signalling rate. It is commonly confused with the much more common 8250 UART that was made popular as the serial port in the IBM Personal Computer. It includes 5 sections: read/write control logic; transmitter; receiver; data bus system; modem control