1
GATE CSE 1990
Subjective
+5
-0
Find the minimum product of sums of the following expression
$$f = ABC + \overline A \,\overline B \,\overline C .$$
2
GATE CSE 1990
MCQ (Single Correct Answer)
+2
-0.6
Two $$NAND$$ gates having open collector outputs are tied together as shown in fig. The logic function $$Y,$$ implemented by the circuit is. GATE CSE 1990 Digital Logic - Boolean Algebra Question 17 English
A
$$Y = A\overline {BC} + \overline {DE} $$
B
$$Y = ABC + DE$$
C
$$Y = \overline {ABC} .\overline {DE} $$
D
$$Y = ABC\,.\,DE$$
3
GATE CSE 1990
Fill in the Blanks
+2
-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
4
GATE CSE 1990
MCQ (Single Correct Answer)
+5
-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

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

A
$$3$$
B
$$4$$
C
$$5$$
D
$$6$$
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