Digital Principles And System Design Set 19
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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 19
Q1 | How many types of digital comparators are?
- 1
- 2
- 3
- 4
Q2 | An identify comparator is defined as a digital comparator which has
- only one output terminal
- two output terminals
- three output terminals
- no output terminal
Q3 | A magnitude comparator is defined as a digital comparator which has
- only one output terminal
- two output terminals
- three output terminals
- no output terminal
Q4 | The purpose of a Digital Comparator is
- to convert analog input into digital
- to create different outputs
- to add a set of different numbers
- to compare a set of variables or unknown numbers
Q5 | TTL 74LS85 is a
- 1-bit digital comparator
- 4-bit magnitude comparator
- 8-bit magnitude comparator
- 8-bit word comparator
Q6 | How many inputs will a decimal-to-BCD encoder have?
- 4
- 8
- 10
- 16
Q7 | How many outputs will a decimal-to-BCD encoder have?
- 4
- 8
- 12
- 16
Q8 | 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
Q9 | If we record any music in any recorder, such types of process is called
- multiplexing
- encoding
- decoding
- demultiplexing
Q10 | How many OR gates are required for a Decimal-to- bcd encoder?
- 2
- 10
- 3
- 4
Q11 | How many OR gates are required for an octal-to- binary encoder?
- 3
- 2
- 8
- 10
Q12 | The discrepancy of 0 output due to all inputs being 0 or D0, being 0 is resolved by using additional input known as
- enable
- disable
- strobe
- clock
Q13 | Can an encoder be called as multiplexer?
- no
- yes
- sometimes
- never
Q14 | 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
Q15 | 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
Q16 | 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
Q17 | 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
Q18 | 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
Q19 | What is the function of an enable input on a multiplexer chip?
- to apply vcc
- to connect ground
- to active the entire chip
- to active one half of the chip
Q20 | 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
Q21 | 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
Q22 | In a multiplexer, the selection of a particular input line is controlled by
- data controller
- selected lines
- logic gates
- both data controller and selected lines
Q23 | If the number of n selected input lines is equal to 2^m then it requires select lines.
- 2
- m
- n
- 2n
Q24 | How many select lines would be required for an 8- line-to-1-line multiplexer?
- 2
- 4
- 8
- 3
Q25 | A basic multiplexer principle can be demonstrated through the use of a
- single-pole relay
- dpdt switch
- rotary switch
- linear stepper