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What is the difference, if any, between a UART port and a serial port in a computer?
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Simply, a UART is a serial port, but a serial port is not neccessary a UART. Serial port is a general term for anything serial, without further specification, while a UART defines a tranceiver for a specific asynchronus format.
A microprocessor UART can be used to interface to on-board peripherals such as Bluetooth and wireless transceivers, using a dedicated bridge.
UART was one of the earliest serial protocols. The once ubiquitous serial ports are almost always UART-based, and devices using RS-232 interfaces, external modems, etc. are common examples of where UART is used.
A serial port is an interface that allows a PC to transmit or receive data one bit at a time. It is one of the oldest types of interfaces and at one time was commonly used to connect printers and external modems to a PC.
UART is the abbreviation of Universal Asynchronous Receiver Transmitter, the name of the chip that enables the computer to communicate via a serial line (eg. RS-232, RS-485, RS-422).
The serial port is the RS-232 interface (internally connected to the UART) of the computer.
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