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23
votes
1
GATE IT 2006 | Question: 36
The majority function is a Boolean function $f(x, y, z)$ that takes the value $1$ whenever a majority of the variables $x,y,z$ are $1.$ In the circuit diagram for the majority function shown below, the logic gates for the boxes labeled $P$ and $Q$ are, ... $\textsf{XOR}, \textsf{XOR}$ $\textsf{OR}, \textsf{OR}$ $\textsf{OR}, \textsf{AND}$
answered
in
Digital Logic
Nov 23, 2014
9.8k
views
gateit-2006
digital-logic
circuit-output
normal
–2
votes
2
GATE IT 2004 | Question: 42
Using a $4-bit$ $2's$ complement arithmetic, which of the following additions will result in an overflow? $1100 + 1100$ $0011 + 0111$ $1111 + 0111$ i only ii only iii only i and iii only
answered
in
Digital Logic
Nov 23, 2014
10.4k
views
gateit-2004
digital-logic
number-representation
normal
18
votes
3
GATE IT 2004 | Question: 8
What is the minimum number of $\text{NAND}$ gates required to implement a $2\text{-input EXCLUSIVE-OR}$ function without using any other logic gate? $2$ $4$ $5$ $6$
answered
in
Digital Logic
Nov 23, 2014
11.2k
views
gateit-2004
digital-logic
min-no-gates
normal
79
votes
4
GATE IT 2005 | Question: 9
A dynamic RAM has a memory cycle time of $64$ $\text{nsec}$. It has to be refreshed $100$ times per msec and each refresh takes $100$ $\text{nsec}$ . What percentage of the memory cycle time is used for refreshing? $10$ $6.4$ $1$ $0.64$
answered
in
Digital Logic
Nov 21, 2014
10.5k
views
gateit-2005
digital-logic
memory-interfacing
normal
84
votes
5
GATE IT 2005 | Question: 11
How many pulses are needed to change the contents of a $8$-bit up counter from $10101100$ to $00100111$ (rightmost bit is the LSB)? $134$ $133$ $124$ $123$
answered
in
Digital Logic
Nov 21, 2014
7.4k
views
gateit-2005
digital-logic
digital-counter
normal
56
votes
6
GATE IT 2005 | Question: 47
$(34.4)_{8} × \left ( 23.4 \right )_{8}$ evaluates to $(1053.6)_{8}$ $(1053.2)_{8}$ $(1024.2)_{8}$ None of these
answered
in
Digital Logic
Nov 21, 2014
8.0k
views
gateit-2005
digital-logic
number-representation
normal
3
votes
7
GATE IT 2005 | Question: 48
The circuit shown below implements a $\text{2-input}$ NOR gate using two $2-4$ MUX (control signal $1$ selects the upper input). What are the values of signals $x, y$ and $z$? $1, 0, B$ $1, 0, A$ $0, 1, B$ $0, 1, A$
answered
in
Digital Logic
Nov 21, 2014
7.6k
views
gateit-2005
digital-logic
normal
multiplexer
114
votes
8
GATE IT 2005 | Question: 46
A line $L$ in a circuit is said to have a $stuck-at-0$ fault if the line permanently has a logic value $0$. Similarly a line $L$ in a circuit is said to have a $stuck-at-1$ fault if the line permanently has a logic value $1$. A circuit is said to have a ... number of distinct multiple $stuck-at$ faults possible in a circuit with $N$ lines is $3^N$ $3^N - 1$ $2^N - 1$ $2$
answered
in
Combinatory
Nov 21, 2014
7.5k
views
gateit-2005
combinatory
normal
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