Digital Electronics Set 8
On This Page
This set of Digital Electronics Multiple Choice Questions & Answers (MCQs) focuses on Digital Electronics Set 8
Q1 | 3 bits full adder contains
- 3 combinational inputs
- 4 combinational inputs
- 6 combinational inputs
- 8 combinational inputs
Q2 | The simplified expression of full adder carry is
- c = xy+xz+yz
- c = xy+xz
- c = xy+yz
- c = x+y+z
Q3 | Complement of F’ gives back
- f’
- f
- ff
- ff’
Q4 | Decimal digit in BCD can be represented by
- 1 input line
- 2 input lines
- 3 input lines
- 4 input lines
Q5 | The number of logic gates and the way of their interconnections can be classified as
- logical network
- system network
- circuit network
- gate network
Q6 | What is a multiplexer?
- it is a type of decoder which decodes several inputs and gives one output
- a multiplexer is a device which converts many signals into one
- it takes one input and results into many output
- it is a type of encoder which decodes several inputs and gives one output
Q7 | Which combinational circuit is renowned for selecting a single input from multiple inputs & directing the binary information to output line?
- data selector
- data distributor
- both data selector and data distributor
- demultiplexer
Q8 | It is possible for an enable or strobe input to undergo an expansion of two or more MUX ICs to the digital multiplexer with the proficiency of large number of
- inputs
- outputs
- selection lines
- enable lines
Q9 | Which is the major functioning responsibility of the multiplexing combinational circuit?
- decoding the binary information
- generation of all minterms in an output function with or-gate
- generation of selected path between multiple sources and a single destination
- encoding of binary information
Q10 | 6 MULTIPLEXER
- to apply vcc
- to connect ground
- to active the entire chip
- to active one half of the chip
Q11 | One multiplexer can take the place of
- several ssi logic gates
- combinational logic circuits
- several ex-nor gates
- several ssi logic gates or combinational logic circuits
Q12 | A digital multiplexer is a combinational circuit that selects
- one digital information from several sources and transmits the selected one
- many digital information and convert them into one
- many decimal inputs and transmits the selected information
- many decimal outputs and accepts the selected information
Q13 | If the number of n selected input lines is equal to 2^m then it requires select lines.
- 2
- m
- n
- 2n
Q14 | How many select lines would be required for an 8-line-to-1-line multiplexer?
- 2
- 4
- 8
- 3
Q15 | A basic multiplexer principle can be demonstrated through the use of a
- single-pole relay
- dpdt switch
- rotary switch
- linear stepper
Q16 | How many NOT gates are required for the construction of a 4-to-1 multiplexer?
- 3
- 4
- 2
- 5
Q17 | In the given 4-to-1 multiplexer, if c1 = 0 and c0 = 1 then the output M is
- x0
- x1
- x2
- x3
Q18 | The enable input is also known as
- select input
- decoded input
- strobe
- sink
Q19 | The word demultiplex means
- one into many
- many into one
- distributor
- one into many as well as distributor
Q20 | Why is a demultiplexer called a data distributor?
- the input will be distributed to one of the outputs
- one of the inputs will be selected for the output
- the output will be distributed to one of the inputs
- single input to single output
Q21 | Most demultiplexers facilitate which type of conversion?
- decimal-to-hexadecimal
- single input, multiple outputs
- ac to dc
- odd parity to even parity
Q22 | In 1-to-4 demultiplexer, how many select lines are required?
- 2
- 3
- 4
- 5
Q23 | In a multiplexer the output depends on its
- data inputs
- select inputs
- select outputs
- enable pin
Q24 | In 1-to-4 multiplexer, if C1 = 0 & C2 = 1, then the output will be
- y0
- y1
- y2
- y3
Q25 | In 1-to-4 multiplexer, if C1 = 1 & C2 = 1, then the output will be
- y0
- y1
- y2
- y3