Digital Principles And System Design Set 22
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This set of Digital Principles and System Design Multiple Choice Questions & Answers (MCQs) focuses on Digital Principles And System Design Set 22
Q1 | When both inputs of SR latches are low, the latch
- q output goes high
- q’ output goes high
- it remains in its previously set or reset state
- it goes to its next set or reset state
Q2 | When both inputs of SR latches are high, the latch goes
- unstable
- stable
- metastable
- bistable
Q3 | The register is a type of
- sequential circuit
- combinational circuit
- cpu
- latches
Q4 | How many types of registers are?
- 2
- 3
- 4
- 5
Q5 | The main difference between a register and a counter is
- a register has no specific sequence of states
- a counter has no specific sequence of states
- a register has capability to store one bit of information but counter has n-bit
- a register counts data
Q6 | In serial shifting method, data shifting occurs
- universal shift register
- unidirectional shift register
- unipolar shift register
- unique shift register
Q7 | A register that is used to store binary information is called
- data register
- binary register
- shift register
- d – register
Q8 | A shift register is defined as
- the register capable of shifting information to another register
- the register capable of shifting information either to the right or to the left
- the register capable of shifting information to the right only
- the register capable of shifting information to the left only
Q9 | In digital logic, a counter is a device which
- counts the number of outputs
- stores the number of times a particular event or process has occurred
- stores the number of times a clock pulse rises and falls
- counts the number of inputs
Q10 | A counter circuit is usually constructed of
- a number of latches connected in cascade form
- a number of nand gates connected in cascade form
- a number of flip-flops connected in cascade
- a number of nor gates connected in cascade form
Q11 | 4 COUNTERS
- 0 to 2n
- 0 to 2n + 1
- 0 to 2n – 1 d) 0 to 2n+1/2
Q12 | How many types of the counter are there?
- 2
- 3
- 4
- 5
Q13 | A decimal counter has states.
- 5
- 10
- 15
- 20
Q14 | Ripple counters are also called
- ssi counters
- asynchronous counters
- synchronous counters
- vlsi counters
Q15 | Synchronous counter is a type of
- ssi counters
- lsi counters
- msi counters
- vlsi counters
Q16 | Three decade counter would have
- 2 bcd counters
- 3 bcd counters
- 4 bcd counters
- 5 bcd counters
Q17 | BCD counter is also known as
- parallel counter
- decade counter
- synchronous counter
- vlsi counter
Q18 | The parallel outputs of a counter circuit represent the
- parallel data word
- clock frequency
- counter modulus
- clock count
Q19 | A sequential logic can’t be executed by concurrent statements only.
- true
- false
Q20 | Which of the following sequential circuit doesn’t need a clock signal?
- flip flop
- asynchronous counter
- shift register
- latch
Q21 | The following timing diagram shows flip flop.
- t flip-flop
- d flip-flop
- sr flip-flop
- jk flip-flop
Q22 | The process used for implementation of sequential logic in VHDL is called process.
- sequential process
- combinational process
- clocked process
- unclocked process
Q23 | Why do we need to define clock signal in the sensitivity list of the process?
- to trigger the statement as soon as there is some event on clock
- to trigger the clock signal as soon as there is some event on input
- to trigger the clock signal as soon as there is some event on output
- to trigger the statement as soon as there is some event on input
Q24 | A user has designed JK flip flop by using the VHDL code. The output is continuously switching between 0 and 1. This condition is known as
- switching condition
- master slave condition
- race around condition
- edge triggered condition
Q25 | Which of the following method is not used to remove the race around condition in a flip flop?
- using level triggered flip flop
- using master slave flip flop
- using edge triggered flip flop
- all of the above are used to remove the race around