Digital Logic and Design MCQs with Answers
Practice important Digital Logic and Design MCQs with answers and explanations.
Multiple Choice Questions
Q171: ________ is used to simplify the circuit that determines the next state.
- A: State diagram
- B: Next state table
- C: State reduction
- D: State assignment
View Answer
D
Q172: Assume that a 4-bit serial in/serial out shift register is initially clear. We wish to store the nibble 1100. What will be the 4-bit pattern after the second clock pulse? (Right-most bit first.)
- A: 1100
- B: 11
- C: 0
- D: 1111
View Answer
B
Q173: The diagram given below represents __________
- A: Demorgans law
- B: Associative law
- C: Product of sum form
- D: Sum of product form
View Answer
D
Q174: The operation of J-K flip-flop is similar to that of the SR flip-flop except that the J-K flip-flop ___________
- A: Doesn’t have an invalid state
- B: Sets to clear when both J = 0 and K = 0
- C: It does not show transition on change in pulse
- D: It does not accept asynchronous inputs
View Answer
A
Q175: A multiplexer with a register circuit converts _________
- A: Serial data to parallel
- B: Parallel data to serial
- C: Serial data to serial
- D: Parallel data to parallel
View Answer
B
Q176: A GAL is essentially a ________.
- A: Non-reprogrammable PAL
- B: PAL that is programmed only by the manufacturer
- C: Very large PAL
- D: Reprogrammable PAL
View Answer
D
Q177: in ____________, all the columns in the same row are either read or written.
- A: Sequential Access
- B: MOS Access
- C: FAST Mode Page Access
- D: None of given options
View Answer
C
Q178: In order to synchronize two devices that consume and produce data at different rates, we can use _________
- A: Read Only Memory
- B: Fist In First Out Memory
- C: Flash Memory
- D: Fast Page Access Mode Memory
View Answer
B
Q179: A positive edge-triggered flip-flop changes its state when ________________
- A: Low-to-high transition of clock
- B: High-to-low transition of clock
- C: Enable input (EN) is set
- D: Preset input (PRE) is set
View Answer
A
Q180: The decimal “17” in BCD will be represented as _________
- A: 11101
- B: 11011
- C: 10111
- D: 11110
View Answer
C