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GATE ECE 1999
MCQ (Single Correct Answer)
+2
-0.6
For a binary half-sub-tractor having two inputs A and B, the correct set of logical expressions for the outputs D (=A minus 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
$$D = \,AB + \overline A \,\overline B ,\,X = A\overline B $$
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Questions Asked from Marks 2
GATE ECE 2024 (2) GATE ECE 2018 (1) GATE ECE 2017 Set 2 (2) GATE ECE 2016 Set 1 (2) GATE ECE 2016 Set 3 (1) GATE ECE 2015 Set 2 (1) GATE ECE 2014 Set 4 (2) GATE ECE 2014 Set 3 (2) GATE ECE 2010 (1) GATE ECE 2009 (1) GATE ECE 2008 (1) GATE ECE 2007 (1) GATE ECE 2004 (1) GATE ECE 2003 (2) GATE ECE 2001 (1) GATE ECE 1999 (1)
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