The correct answer is B. Universal Asynchronous Receiver/Transmitter.
A UART is a type of serial chip that is used to transmit and receive data in a serial format. It is a very common chip that is used in a wide variety of devices, including computers, modems, and microcontrollers.
The letters UART stand for Universal Asynchronous Receiver/Transmitter. The word “universal” means that the UART can be used with a variety of different devices. The word “asynchronous” means that the data is transmitted and received at a variable rate. The word “receiver” means that the UART can receive data from another device. The word “transmitter” means that the UART can send data to another device.
The following are brief explanations of each of the incorrect options:
- A. Unidirectional access regarding transmission: This is not a correct definition of UART. UART is a bidirectional device, meaning that it can both transmit and receive data.
- C. Upper advanced real transfer: This is not a correct definition of UART. UART is a simple device that does not perform any advanced processing of data.
- D. Unable all restore t-bits: This is not a correct definition of UART. UART does not use t-bits.
- E. Use all ROM types: This is not a correct definition of UART. UART does not use ROM.