16550 UART
The 16550 UART (universal asynchronous receiver transmitter) is made by National Semiconductor. Both the physical and software interface of the 16550 are backwardly compatibly with the 16450 UART. The 16550 UART offers a 16-byte FIFO buffer. Now revised to the 16550D. It is a microprocessor designed for implementing the electrical interface for serial communication; it can be used to implement RS-232, and is commonly found in personal computers.External link
Based on material from FOLDOC, used with permission.
