1)If the characters sent are being typed on the computer\'s keyboard, what is th

Question

1)If the characters sent are being typed on the computer's keyboard, what is the average number of
characters that the computer can display on the remote machine in one second? You may answer this
generally or assume a typing speed of 60 words per minute with an average of 5 characters (plus a space or
punctuation mark) per word, that is, 6 keystrokes per word.

2) If the characters being sent to the remote machine are being typed on the computer's keyboard,
will the computer ever have to wait for the UART? You may assume normal operations, that is, no bizarre
events happening to the UART. Explain briefly.

Explanation / Answer

Yes, the computer has to wait for the UART while sending the characters to the remote machine. The receiver looks for the beginning of the start bit. If the start is valid it signals the start of a new character. Since transmission of a single character may take a long time relative to CPU speeds, the UART will maintain a flag showing busy status so that the host system does not deposit a new character for transmission until the previous one has been completed. So the computer has to wait for a signal from UART before sending another character

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