a clock divider with an output of approximately 190 Hz. When placing the clkdivi
ID: 1716174 • Letter: A
Question
a clock divider with an output of approximately 190 Hz. When placing the clkdivider block, you were asked to change the block's parameter to 18. Select the true statement below.
Select one:
a. A clock divider contains a programmable quartz crystal oscillator with different frequency taps. Using the 18th tap produces the 190 Hz clock frequency.
b. The parameter value refers to the correct bit (using class notation this would be i+1) needed from the internal counter to produce the 190 Hz frequency.
c. The clock divider is a built in transistor logic circuit that comes with the BASYS board. Provided correct input codes (in the form of decimal values) this logic block produces a variety of frequencies. In this case, the code "18" produces 190 Hz.
d. The parameter value refers to the correct bit position (called i in class) needed from the internal counter to produce the 190 Hz frequency.
Explanation / Answer
Option (b) is the correct answer.
The option (a) is incorrect as crystal oscillators produce only precise frequency.
The options (b) and (d) state that the parameter value refers to a bit in a counter and the bit positions are very high. Therefore, the counter cannot produce this level of frequency at that bit positions.
Some devices like Model D Rife, produces different frequencies at each frequency code. Therefore, option (b) is correct.
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