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ISRO EC 2018:Digital Circuits & Microprocessor Booster Quiz 2
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Question 1
Answer the following questions
i) A 32x8 RAM is capable of storing how many words; where the word size is 8 bits?
ii) For a 32x8 ROM, how many address line and data lines are required?
i) A 32x8 RAM is capable of storing how many words; where the word size is 8 bits?
ii) For a 32x8 ROM, how many address line and data lines are required?
Question 2
A logic function ‘f’ is implemented using 
MUX as shown in figure below,
If ‘f’ is realized using only 2 input NAND gates then minimum number of NAND gates required are___.
MUX as shown in figure below, If ‘f’ is realized using only 2 input NAND gates then minimum number of NAND gates required are___.
Question 3
A gate having two inputs (A, B) and one output (Y) is implemented using 4:1 MUX as shown in figure below.
The gate is
The gate is
Question 4
Consider a circuit given below with initial state 
Minimum number of clock pulses required to get the initial state again are _________.
Question 5
Consider the logical functions given below.
If f is logic zero, then maximum number of possible minterm in function f3 are ___________.
If f is logic zero, then maximum number of possible minterm in function f3 are ___________.
Question 6
consider the following circuits (assume all gates have a finite propagation delay)
1)
2)
3)
4)
Which of these circuits generate a periodic square wave output?
1)
2)
3)
4)
Which of these circuits generate a periodic square wave output?
Question 7
what is the output of the flip flop shown in the figure if the clock frequency is 4 KHz
Question 8
Consider the multiplexer based logic circuit shown in the figure.
Which one of the following Boolean functions is realized by the circuit?
Which one of the following Boolean functions is realized by the circuit?
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Sep 21ESE & GATE EC
