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Digital Circuits
Number System and Code Convertions
Marks 1Marks 2
Boolean Algebra
Marks 1Marks 2Marks 4Marks 5Marks 10
Logic Gates
Marks 1Marks 2Marks 5Marks 8
Combinational Circuits
Marks 1Marks 2Marks 5Marks 8Marks 10
Sequential Circuits
Marks 1Marks 2Marks 5Marks 8
Semiconductor Memories
Marks 1Marks 2
Logic Families
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Analog to Digital and Digital to Analog Converters
Marks 1Marks 2
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1
GATE ECE 1999
MCQ (Single Correct Answer)
+2
-0.6
For a binary half-subtractor having two inputs A and B, the correct set of Logical expressions for the output D(=Aminus B) and X(=Borrow) are
A
D = AB + $$\overline A B,X = \overline A B$$
B
$$D = \,\overline A B + A\overline B + A\overline B , X= A\overline B $$
C
$$D = \overline A B + A\overline B ,X = \overline A B$$
D
$$D = AB + \overline A \,\overline {\,B} ,X = A\overline B $$
2
GATE ECE 1999
MCQ (Single Correct Answer)
+2
-0.6
The minimized form of the logical expression ($$\overline A \,\overline B \,\overline C + B\overline C + \overline A B\overline C + \overline A BC + AB\overline C )$$
A
$$\overline A \overline C + B\overline C + \overline A B$$
B
$$A\overline C + \overline B C + \overline A B$$
C
$$\overline A C + \overline B C + \overline A B$$
D
$$A\overline C + \overline B C + A\overline B $$
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Questions Asked from Marks 2
GATE ECE 2017 Set 1 (1) GATE ECE 2016 Set 3 (1) GATE ECE 2015 Set 2 (1) GATE ECE 2015 Set 1 (1) GATE ECE 2014 Set 1 (1) GATE ECE 2009 (1) GATE ECE 2007 (1) GATE ECE 2006 (1) GATE ECE 2004 (2) GATE ECE 2003 (1) GATE ECE 1999 (2)
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics