Digital Electronics - Digital System Projects Using HDL

Exercise :: Digital System Projects Using HDL - General Questions

6. 

In the keypad application, what does the data signal define?

A. The row and column encoded data
B. The ring encoded data
C. The freeze locator data
D. The ring counter data

Answer: Option A

Explanation:

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7. 

What does the ring counter in the HDL keypad application do when a key is pressed?

A. Count to find the row
B. Freeze
C. Count to find the column
D. Start the D flip-flop

Answer: Option B

Explanation:

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8. 

In the digital clock project, the purpose of the frequency prescaler is to:

A. find the basic frequency.
B. transform a 60 pps input to a 1 pps timing signal.
C. prevent the clock from exceeding 12:59:59.
D. allow the BCD display to have a value from 00–59.

Answer: Option B

Explanation:

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9. 

Which is not a step that should be followed in project management?

A. Overall definition
B. System documentation
C. Synthesis and testing
D. System integration

Answer: Option B

Explanation:

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10. 

In the keypad application, what does the preset state of the ring counter define?

A. The proper output of the column encoder
B. The NANDing of the rows
C. The NANDing of the columns
D. The proper output of the row encoder

Answer: Option D

Explanation:

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