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- Question
In the keypad HDL encoder, as long as all columns are high the ring counter is enabled and counting.
Options- A. True
- B. False
- Correct Answer
- True
- 1. How many gates would be required to implement the following Boolean expression before simplification? XY + X(X + Z) + Y(X + Z)
Options- A. 1
- B. 2
- C. 4
- D. 5 Discuss
- 2. The 7447A is a BCD-to-7-segment decoder with ripple blanking input and output functions. The purpose of these lines is to ________.
Options- A. turn off the display for any nonsignificant digit
- B. turn off the display for any zero
- C. turn off the display for leading or trailing zeros
- D. test the display to assure all segments are operational Discuss
- 3. In an even-parity system, the following data will produce a parity bit = 1.
data = 1010011
Options- A. True
- B. False Discuss
- 4. Mapping the SOP expression
, we get ________. 
Options- A. (A)
- B. (B)
- C. (C)
- D. (D) Discuss
- 5. In the digital clock project, the AHDL block codes are connected using graphic design files.
Options- A. True
- B. False Discuss
- 6. The main advantage of semiconductor RAM is its ability to:
Options- A. retain stored data when power is interrupted or turned off
- B. be written to and read from rapidly
- C. be randomly accessed
- D. be sequentially accessed Discuss
- 7. The binary number for octal 458 is ________.
Options- A. 100010
- B. 100101
- C. 110101
- D. 100100 Discuss
- 8. Which of the following instructions will move the contents of the accumulator to register 6?
Options- A. MOV 6R, A
- B. MOV R6, A
- C. MOV A, 6R
- D. MOV A, R6 Discuss
- 9. Because of their nonvolatility, high speed, low power requirements, and lack of moving parts, ________ have become feasible alternatives to magnetic disk storage.
Options- A. CD-ROMs
- B. flash memory modules
- C. ROMs
- D. EPROMs Discuss
- 10. What two functions does a DRAM controller perform?
Options- A. address multiplexing and data selection
- B. address multiplexing and the refresh operation
- C. data selection and the refresh operation
- D. data selection and CPU accessing Discuss
More questions
Correct Answer: 5
Correct Answer: turn off the display for any nonsignificant digit
Correct Answer: False
Correct Answer: (B)
Correct Answer: True
Correct Answer: be written to and read from rapidly
Correct Answer: 100101
Correct Answer: MOV R6, A
Correct Answer: flash memory modules
Correct Answer: address multiplexing and the refresh operation
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