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Free computer quiz Online Test - MeritNotes
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Online Exam
No. of Questions :10
Remaining Time :
1. Which of the following devices selects one of several inputs and transmits it to a single output?
(a)
Counter
(b)
Decoder
(c)
Multiplexer
(d)
Demultiplexer
2. The advantage of serial transfer compared with parallel transfer for data transmission is that
(a)
BCD is compatible
(b)
It is faster
(c)
It needs only one wire
(d)
All of these
3. In which of the following adder circuits, the carry look ripples delay is eliminated?
(a)
Carry look ahead adder
(b)
Half adder
(c)
Full adder
(d)
Parallel adder
4. A basic instruction that can be interpreted by a computer generally has
(a)
An address and decoder
(b)
Sequence register and decoder
(c)
A decoder and an accumulator
(d)
An operand and an address
5. Flip flop outputs are always
(a)
Same as inputs
(b)
Independent of each other
(c)
The same
(d)
Complimentary
6. In a digital counter circuit, feedback loop is introduced to
(a)
Reduce number of input pulses to reset the counter
(b)
Synchronous input and output pulses
(c)
Improve stability
(d)
Improve distortion
7. Astable multivibrator are used as
(a)
Voltage to frequency converter
(b)
Frequency to voltage converter
(c)
Squaring circuit
(d)
Comparator circuit
8. How many truth tables can be made from one function table?
(a)
One
(b)
Two
(c)
Three
(d)
Four
9. A multiplexer with a 4 bit data select input is a
(a)
2 : 1 multiplexer
(b)
4 : 1 multiplexer
(c)
8 : 1 multiplexer
(d)
16 : 1 multiplexer
10. Which of the following unit will choose the transform decimal number to binary code?
(a)
Demultiplexer
(b)
Multiplexer
(c)
Encoder
(d)
Decoder
