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Computer Hardware

Q1:

Which hardware component controls serial port communications?

A ROM BIOS

B CPU

C DMA823

D UART 16550

E None of the above

ANS:D - UART 16550

A UART is usually an individual (or part of an) integrated circuit (IC) used for serial communications over a computer or peripheral device serial port. One or more UART peripherals are commonly integrated in microcontroller chips.

Universal Asynchronous Receiver/Transmitter.

A UART (Universal Asynchronous Receiver/Transmitter) is the microchip with programming that controls a computer's interface to its attached serial devices.



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