Digital Electronics Set 10
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This set of Digital Electronics Multiple Choice Questions & Answers (MCQs) focuses on Digital Electronics Set 10
Q1 | How is an encoder different from a decoder?
- the output of an encoder is a binary code for 1-of-n input
- the output of a decoder is a binary code for 1-of-n input
- the output of an encoder is a binary code for n-of-1 output
- the output of a decoder is a binary code for n-of-1 output
Q2 | If we record any music in any recorder, such types of process is called
- multiplexing
- encoding
- decoding
- demultiplexing
Q3 | Can an encoder be a transducer?
- yes
- no
- may or may not be
- both are not even related slightly
Q4 | How many OR gates are required for a Decimal-to-bcd encoder?
- 2
- 10
- 3
- 4
Q5 | How many OR gates are required for an octal-to-binary encoder?
- 3
- 2
- 8
- 10
Q6 | Can an encoder be called as multiplexer?
- no
- yes
- sometimes
- never
Q7 | If two inputs are active on a priority encoder, which will be coded on the output?
- the higher value
- the lower value
- neither of the inputs
- both of the inputs
Q8 | Latches constructed with NOR and NAND gates tend to remain in the latched condition due to which configuration feature?
- low input voltages
- synchronous operation
- gate impedance
- cross coupling
Q9 | One example of the use of an S-R flip-flop is as
- transition pulse generator
- racer
- switch debouncer
- astable oscillator
Q10 | The truth table for an S-R flip-flop has how many VALID entries?
- 1
- 2
- 3
- 4
Q11 | When both inputs of a J-K flip-flop cycle, the output will
- be invalid
- change
- not change
- toggle
Q12 | Which of the following is correct for a gated D-type flip-flop?
- the q output is either set or reset as soon as the d input goes high or low
- the output complement follows the input when enabled
- only one of the inputs can be high at a time
- the output toggles if one of the inputs is held high
Q13 | A basic S-R flip-flop can be constructed by cross-coupling of which basic logic gates?
- and or or gates
- xor or xnor gates
- nor or nand gates
- and or nor gates
Q14 | The logic circuits whose outputs at any instant of time depends only on the present input but also on the past outputs are called
- combinational circuits
- sequential circuits
- latches
- flip-flops
Q15 | Whose operations are more faster among the following?
- combinational circuits
- sequential circuits
- latches
- flip-flops
Q16 | How many types of sequential circuits are?
- 2
- 3
- 4
- 5
Q17 | The sequential circuit is also called
- flip-flop
- latch
- strobe
- adder
Q18 | The basic latch consists of
- two inverters
- two comparators
- two amplifiers
- two adders
Q19 | In S-R flip-flop, if Q = 0 the output is said to be
- set
- reset
- previous state
- current state
Q20 | The output of latches will remain in set/reset untill
- the trigger pulse is given to change the state
- any pulse given to go into previous state
- they don’t get any pulse more
- the pulse is edge-triggered
Q21 | What is a trigger pulse?
- a pulse that starts a cycle of operation
- a pulse that reverses the cycle of operation
- a pulse that prevents a cycle of operation
- a pulse that enhances a cycle of operation
Q22 | The circuits of NOR based S-R latch classified as asynchronous sequential circuits, why?
- because of inverted outputs
- because of triggering functionality
- because of cross-coupled connection
- because of inverted outputs & triggering functionality
Q23 | Which are easier to design?
- clocked circuits
- asynchronous sequential circuits
- clocked circuits with buffer
- asynchronous sequential circuits with buffers
Q24 | is used to drive high capacitance load.
- single polar capability
- bipolar capability
- tripolar capability
- bi and tri polar capability
Q25 | As the temperature is increased, storage time
- halved
- doubled
- does not change
- tripled