1. A serial communication system transmits ASCII data over an RS-232 serial line with 7-bits of data, 1-bit of parity, a start bit, and a stop bit = 10 bits/character. Answer the following questions: A) If the data is being transmitted at 9600 baud how long does it take to transmit 10,000 characters? B) If the data is being transmitted at 115,000 baud how long does it take to transmit 10,000 characters? C) When the computer sends data to the UART the UART raises a busy flag which remains high until the 10-bits for the character have been transmitted. If this busy flag is used to trigger an interrupt service routine which reloads the UART with new data, what percent of the total transmission time is the computer free to do other things if the interrupt processing and the ISR require 2u seconds of CPU time and the baud rate is 9600. D) Repeat part C if the baud rate is 115,000.