| Baud Rates |
| 300 |
| 600 |
| 1200 |
| 2400 |
| 4800 |
| 9600 |
| 19200 |
A processor uses a serial link to communicate with a keyboard for word processing. A typist using this keyboard can type at rates peaking at 120 words per minute, where a word is 6 characters (including spaces and punctuation). The characters will be transmitted from the keyboard in 8-bit ASCII with one stop bit and no parity. Only consider these and no special characters.
If the processor allows selections of baud rates from the table at the right, circle the minimum baud rate that can be selected and still have the keyboard work for all typists?
120 wpm -> 120*6/60 cps = 12 cps
Each character requires 10 bits sent (8 bits for the character, 1 start, 1 stop)
Thus the minimum baud rate is 12*10=120 baud
Thus 300 baud is the setting to use.
Note that this is a fast typist!
