GATE CSE 1990 | GATE CSE Year Wise Previous Years Questions

GATE CSE 1990

Fill in the Blanks

-0

Fill in the blanks:
In the two bit full-adder/sub tractor unit shown in Fig., when the switch is in position $$2.$$ $$.....$$ using $$.....$$ arithmetic. GATE CSE 1990 Digital Logic - Combinational Circuits Question 10 English

GATE CSE 1990

MCQ (Single Correct Answer)

-1.5

For the synchronous counter shown in fig. write the truth table of $${Q_0},\,\,{Q_1}$$ and $${Q_2}$$ after each pulse starting from $${Q_0} = {Q_1} = {Q_2} = 0$$ and determine the counting sequenced also the modulus of the counter GATE CSE 1990 Digital Logic - Sequential Circuits Question 9 English

GATE CSE 1990 Digital Logic - Sequential Circuits Question 9 English

What is the modules of the counter with initial state $${Q_2}\,{Q_1}\,{Q_0} = 000$$

$$3$$

$$4$$

$$5$$

$$6$$

GATE CSE 1990

MCQ (Single Correct Answer)

-0.6

Indicate which of the following well-formed formula are valid:

$$\left( {\left( {{\rm P} \Rightarrow Q} \right) \wedge \left( {Q \Rightarrow R} \right)} \right) \Rightarrow \left( {{\rm P} \Rightarrow R} \right).$$

$$\left( {{\rm P} \Rightarrow Q} \right) \Rightarrow \left( { \sim P \Rightarrow \sim Q} \right)$$

$$\left( {{\rm P}\, \wedge \,\left( { \sim {\rm P}\,\,V \sim Q} \right)} \right) \Rightarrow Q\left( { \sim {\rm P} \Rightarrow \sim Q} \right)$$

$$\left( {\left( {{\rm P} \Rightarrow R} \right) \vee \left( {Q \Rightarrow R} \right)} \right) \Rightarrow \left( {\left( {\left( {{\rm P} \vee Q} \right) \Rightarrow R} \right)} \right)$$

GATE CSE 1990

MCQ (Single Correct Answer)

-0.6

A graph is planar if and only if,

it does not contain subgraphs homeomorphic to K₅ and K_{3, 3.}

it does not contain subgraphs isomorphic to K₅ or K_{3, 3.}

it does not contain subgraphs isomorphic to K₅ and K_{3, 3.}

it does not contain subgraphs homeomorphic to K₅ or K_{3, 3.}

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