Digital Components Mcqs
Our Collection of Digital Components multiple choice questions and answers focuses on all areas of Digital Components covering a collection of most authoritative and best reference books on Digital Components. One should spend 1 hour daily for 2-3 months to learn and assimilate Digital Components comprehensively.
17. A combinational logic circuit which is used when it is desired to send data from two or more source through a single transmission line is known as
Encoder
Decoder
Multiplexer
Demultiplexer
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18. How many Flip-Flops are required for mod–16 counter?
5
6
3
4
19. The digital logic family which has minimum power dissipation is
TTL
RTL
DTL
CMOS
20. Data can be changed from special code to temporal code by using
Shift registers
Counters
Combinational circuits
A/D converters
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21. A ring counter consisting of five Flip-Flops will have
5 states
10 states
32 states
Infinite states
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22. The speed of conversion is maximum in
Successive-approximation A/D converter
Parallel-comparative A/D converter
Counter ramp A/D converter
Dual-slope A/D converter
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23. The gates required to build a half adder are
EX-OR gate and NOR gate
EX-OR gate and OR gate
EX-OR gate and AND gate
Four NAND gates
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24. If the input to T-flipflop is 100 Hz signal, the final output of the three T-flipflops in cascade is
1000 Hz
500 Hz
333 Hz
12.5 Hz
25. The device which changes from serial data to parallel data is
COUNTER
MULTIPLEXER
DEMULTIPLEXER
FLIP-FLOP
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26. A device which converts BCD to Seven Segment is called
Encoder
Decoder
Multiplexer
Demultiplexer
27. The access time of ROM using bipolar transistors is about
1 sec
1 msec
1 µsec
1 nsec
28. The A/D converter whose conversion time is independent of the number of bits is
Dual slope
Counter type
Parallel conversion
Successive approximation
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29. A 4-bit synchronous counter uses flip-flops with propagation delay times of 15 ns each. The maximum possible time required for change of state will be
15 ns
30 ns
45 ns
60 ns
30. Words having 8-bits are to be stored into computer memory. The number of lines required for writing into memory are
1
2
4
8