Q.1
When A and B represent the inputs of an Exclusive OR logic gate ,its output O will be
  • O=AB’+A’B
  • O=AB+A+B
  • O=A+B+(AB)'
  • None of these
Q.2
Which of the following two input logic functions can act as a Universal gate?
  • A ⊕ B
  • AB
  • (A+B)’
  • None of the above
Q.3
A _________ accepts and/or transfers information serially.
  • S-R latch
  • shift register
  • FPGA
  • parallel register
Q.4
The ________ flip-flop has two inputs and all possible combinations of input values are valid.
  • J-K
  • D
  • S-R
  • clocked S-R
Q.5
Which of the following is a functionally complete set?
  • AND, NOT
  • NOR
  • AND, OR, NOT
  • all of the above
Q.6
The unary operation _________ inverts the value of its operand.
  • OR
  • NOT
  • NAND
  • XOR
Q.7
The operation _________ yields true if either or both of its operands are true.
  • NOT
  • AND
  • NAND
  • OR
Q.8
The operand ________ yields true if and only if both of its operands are true.
  • XOR
  • OR
  • AND
  • NOT
Q.9
A Boolean function can be realized in the sum of products (SOP) form but not in the product of sums (POS) form.
  • True
  • False
Q.10
Claude Shannon, a research assistant in the Electrical Engineering Department at M.I.T., proposed the basic principles of Boolean algebra.
  • True
  • False
Q.11
Counters can be designated as _________.
  • a. asynchronous
  • b. synchronous
  • c. both asynchronous and synchronous
  • d. neither asynchronous or synchronous
Q.12
CPUs make use of _________ counters, in which all of the flip-flops of the counter change at the same time.
  • synchronous
  • asynchronous
  • clocked S-R
  • timed ripple
Q.13
________ is implemented with combinational circuits.
  • Nano memory
  • Random access memory
  • Read only memory
  • No memory
Q.14
A _______ is an electronic circuit that produces an output signal that is a simple Boolean operation on its input signals.
  • gate
  • decoder
  • counter
  • flip-flop
Q.15
For more than four variables an alternative approach is a tabular technique referred to as the _________ method.
  • DeMorgan
  • Quine-McCluskey
  • Karnaugh map
  • Boole-Shannon
Q.16
A _________ is a PLD featuring a general structure that allows very high logic capacity and offers more narrow logic resources and a higher ration of flip-flops to logic resources than do CPLDs.
  • SPLD
  • FPGA
  • PAL
  • PLA
Q.17
The operation of the digital computer is based on the storage and processing of binary data.
  • True
  • False
Q.18
Which of the following is not a combinational circuit?
  • adder
  • code convertor
  • multiplexer
  • counter
Q.19
Which of the following is a not a characteristics of combinational circuits?
  • the output of combinational circuit depends on present input
  • there is no use of clock signal in combinational circuits
  • the output of combinational circuit depends on previous output
  • there is no storage element in combinational circuit
Q.20
Which of the following is not a combinational circuit?
  • adder
  • code convertor
  • multiplexer
  • counter
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