Digital Electronics MCQs Quizlet Bank

By: Prof. Dr. Fazal Rehman | Last updated: March 3, 2022

Digital Electronics MCQs Quizlet Bank

1. Which type of conversion, most demultiplexers facilitate? A. Single input, multiple outputs B. Decimal-to-hexadecimal C. Odd parity to even parity D. AC to DC

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A

2. How many select lines are requiredIn, in 1-to-4 demultiplexer? A. 4 B. 2 C. 6 D. 9

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B

3. For the implementation of 1-to-16 DEMUX, Which of the following IC is used? A. IC 74139 B. IC 74138 C. IC 74154 D. IC 74155

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C

4. One transistor and one capacitor as a basic memory unit, Which of the following memory unit is? A. DRAM B. SRAM C. None of these D. Both A & B

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A

5. Mention that which of the following number system has a base of 16? A. Decimal B. Hexadecimal C. Octal D. None

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B

6. What latch is ________ sensitive… A. level B. edge C. both level and edge D. None

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A

7. _______ number of bits are required to store one BCD digit. A. 8 B. 4 C. 2 D. 3

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B

8. Which of the following sets of logic gates are designated as universal gates..? A. NOR, NAND B. OR, NOT C. XOR, NOR D. NOR, NAND E. None of these

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D

9. A D-flip-flop is said to be transparent when A. the output follows a clock B. the output follows an input C. the output is LOW D. the output is HIGH

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B

10. What is the base of digital electronics in a numbering system? A. Binary B. Hexadecimal C. Decimal D. Octal E. None

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A

11. Which of the following symbols represent the digit in the binary system? A. 0,1,2 B. 0 to 8 C. 0,1 D. 1,2

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C

12. Which one of the following is a widely used alphanumeric code for computer input and output? A. Parity B. Gray C. EBCDIC D. ASCII

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D