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ISRO 2006-ECE Flipflops
Which of the following statements are correct ?1. A flip-flop is used to store $1$ bit of information.2. Race-around condition occurs in a $J$-$K$ flip-flop when both the...
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ISRO 2006 -ECE Venn Diagrams
The Boolean expression for the shaded area in the Venn diagram isa) X'+Y' +Zb) XY'Z + X'YZc) X + Y + Zd) X'Y'Z+XY
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ISRO 2008- ECE Dynamic hazard
In asynchronous circuits, which of the following best explains a dynamic hazardOutput changes several times for a single change in an inputOutput changes to a different s...
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ISRO 2007-ECE Up counter
A 4-bit presetable UP counter has preset input 0101. The preset operation takes place as soon as the counter reaches 1111. The modulus of the counter isa) 5b) 10c) 11d) 1...
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ISRO 2009-ECE RISC vs CISC
The theoretical dividing line between Reduced Instruction Set computing (RISC) microprocessor and Complex Instructions Set Computing (CISC) microprocessor isa) Instructio...
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ISRO 2010- ECE Huffman code length
A zero memory source emits six messages with probabilities 0.3, 0.25, 0.15, 0.12, 0.1 and 0.08. If binary Huffman coding is used, what will be the average code length?a) ...
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ISRO 2007- ECE Combinational circuit
The Boolean expression for the output of the logic circuit shown in the figure is$Y=AB+ A'B'+C$$Y= AB+A'B'+ C'$$Y=A B'+ A'B+C$$Y=AB+ A'B+ C'$
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ISRO 2011-ECE Computer Architecture
A microprocessor with 12 bit address bus will be able to access ________ kilobytes of memorya) 0.4b) 2c) 10d) 4
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ISRO 2009-ECE MOD Counter
A certain JK FF has $t_{pd}$=12 ns. The largest MOD counter that can be constructed from such FFs and still operate up to 10 MHz isa) 16b) 256c) 8d) 128
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ISRO 2008-ECE Digital Logic
Which type of memory has fast erase and write times(a) EPROM(b) EEPROM(c) Flash memory(d) None of these
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ISRO 2009- ECE Calculus
$lim_{x ->0}$ (x log sin x) isa) 0b) 1/2c) 1d) 2
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ISRO 2008-ECE Computer Architecture
Micro programming refers to(a) Emulation(b) Programming at micro level(c) The use of storage to implement the control unit(d) Array processing
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ISRO 2011- ECE Computer Architecture
Which of the following statements with reference to a generic microprocessor is correct?a. Instruction cycle time period is exactly equal to machine cycle time periodb. I...
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ISRO 2011-ECE Computer networks
The modulation normally used with digital data isa) AMb) FMc) SSBd) QPSK
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ISRO 2006-ECE Ripple counter
A Pulse train with a frequency of 1MHz is counted using a modulo 1024 ripple-counter built with J-K flip-flops. For proper operation of the counter the maximum permissibl...
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ISRO 2008-ECE - Ripple counter
In a ripple counter how many changes in state happen when count changes from 7 to 8?(a)$1$(b)$2$(c)$3$(d)$4$
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ISRO 2011-ECE Computer networks
The bandwidth of a 'N' bit binary coded PCM signal for modulating a signal having bandwidth of f Hz isa. f/N Hz.b. fc. Nfd. N
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ISRO 2009-ECE Probability
A man with n keys wants to open a lock. He tries his keys at random.The expected number of attempts for his success is (keys are replaced after every attempt)a) n/2b) nc)...
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ISRO 2007-ECE JK flipflop as Divide by 2 circuit
For one of the following conditions, clocked $J$-$K$ flip-flop can be used as divided by $2$ circuit where the pulse train to be divided is applied at clock input :$J$ = ...
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ISRO 2011-ECE Computer Architecture
When a microprocessor interfaces with a peripheral or memory device, the normal timing of the microprocessor may need to be altered by introducing____a. Latchingb. Wait s...
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