Use your own words to explain the purpose of linecontrol register within the uart.

UART is stands for the universal asynchronous receiver-transmitter and UART is basically used for controlling the serial communication in the subsystem of the computer. As, the UART take data in the form of bytes and then transmitted in sequential manner and it reassemble bits into the bytes.

The main purpose of line control register in the UART is defined as, it uses the basic parameter for the communication. The basic function of line control are converting the data into the bits per character and checking the parity bit.