GATE Electronics: Questions 71  75 of 271
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Question number: 71
» Digital Circuits » Number Systems; Combinatorial Circuits » Arithmetic Circuits, Code Converters, Multiplexers, Decoders and PLAs
Appeared in Year: 2008
Question
The two numbers represented in signed 2’s complement form are P + 11101101 and Q = 11100110. If Q is subtracted from P, the value obtained in signed 2’s complement is
Choices
Choice (4)  Response  

a.  111111001 

b.  1000001111 

c.  11111001 

d.  00000111 

Question number: 72
» Digital Circuits » Sequential Circuits » Counters
Appeared in Year: 1999
Question
The ripple counter shown in the given figure is works as a,
Choices
Choice (4)  Response  

a.  Mod5 down counter 

b.  Mod3 up counter 

c.  Mod3 down counter 

d.  Mod5 up counter 

Question number: 73
» Digital Circuits » Sequential Circuits » Latches and FlipFlops
Appeared in Year: 2009
Question
What are the counting states for the counter shown in the figure below
Choices
Choice (4)  Response  

a.  00, 11, 01, 10, 00… 

b.  01, 10, 11, 00, 01… 

c.  11, 10, 00, 11, 10… 

d.  01, 10, 00, 01, 10… 

Question number: 74
» Digital Circuits » 8Bit Microprocessor (8085) » Memory and IO Interfacing
Appeared in Year: 2004
Question
The number of memory cycles required to execute the following 8085 instructions
I LDA 3000 H
II LXI D, FOF1H would be
Choices
Choice (4)  Response  

a.  2 for I and 2 for II 

b.  3 for I and 4 for II 

c.  4 for I and 3 for II 

d.  3 for I and 3 for II 

Question number: 75
» Digital Circuits » Data Converters » Sample and Hold Circuits, ADCs and DACs
Appeared in Year: 2001
Question
For the ring oscillator shown in the figure, the propagation delay of each inverter is 100 Pico sec. What is the fundamental frequency of the oscillator output
Choices
Choice (4)  Response  

a.  2 GHz 

b.  1 GHz 

c.  10 MHz 

d.  100 MHz 
