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1 1 answer
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GATE ECE 1997 | Question 4.4
A signed integer has been stored in a byte using the $2$'s complement format. We wish to store the same integer in a $16$ bit word. We shouldcopy the original byte to the...
1 1 vote
0 0 answers
461
461 views
GATE ECE 1997 | Question 4.7
For the $\text{NMOS}$ logic gate shown in the figure is the logic function implemented is$\overline{\mathrm{ABCDE}}$$(\mathrm{AB}+\overline{\mathrm{C}}) \cdot(\overline{\...
1 1 vote
1 1 answer
465
465 views
GATE ECE 1997 | Question 4.8
In a $\text{J-K}$ flip-flip we have $\text{J} = \overline{Q}$ and $\text{K}=1$. Assuming the flip-flop was initially cleared and then clocked for $6$ puleses, the sequenc...
0 0 votes
0 0 answers
336
336 views
GATE ECE 1997 | Question 4.9
The gate delay of an $\text{NMOS}$ inverter is dominated by charge time rather than discharge time becausethe driver transistor has larger threshold voltage than the load...
3 3 votes
0 0 answers
321
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GATE ECE 1997 | Question 4.10
The boolean function $\mathrm{A}+\mathrm{BC}$ is a reduced form of$\mathrm{AB}+\mathrm{BC}$$(\mathrm{A}+\mathrm{B}) \cdot(\mathrm{A}+\mathrm{C})$$\overline{\mathrm{A}} \m...
0 0 votes
0 0 answers
238
238 views
GATE ECE 1997 | Question 5.3
(1) An $8$-bit wide $5$ word sequential memory will have$8$ Fixed $\text{‘AND'}$ gates and $4$ programmable $\text{‘OR'}$ gates(2) A $256 \times 4$ $\text{EFROM}$ hasEigh...
0 0 votes
0 0 answers
285
285 views
GATE ECE 1997 | Question 5.5
While moving data between registers of the $8085$ and the stack(1) a $\text{PUSH}$ instructionPre increments the stack pointer(2) a $\text{POP}$ instructionPost increment...
1 1 vote
0 0 answers
385
385 views
GATE ECE 1997 | Question 14
A sequence generator is shown in the figure. The counter status $\left(\mathrm{Q}_{0}, \mathrm{Q}_{1}, \mathrm{Q}_{2}\right)$ is initialised to $010$ using preset/clear i...
0 0 votes
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351
351 views
GATE ECE 1997 | Question 20
An $8085 \; \mu \mathrm{P}$ uses a $2 \; \mathrm{MHz}$ crystal. Find the time taken by it to execute the following delay subroutine, inclusive of the call instruction in ...
0 0 votes
0 0 answers
458
458 views
GATE ECE 2000 | Question 1.15
An $8$ bit successive approximation analog to digital converter has full scale reading of $2.55 \mathrm{~V}$ and its conversion time for an analog input of $1 \mathrm{~V}...
0 0 votes
0 0 answers
511
511 views
GATE ECE 2000 | Question 1.16
The number of hardware interrupts (which require an external signal to interrupt) present in an $8085$ microprocessor are$1$$4$$5$$13$
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436
436 views
GATE ECE 2000 | Question 1.18
The number of comparators in a $4$ bit flash $\text{ADC}$ is$4$$5$$15$$16$
1 1 vote
0 0 answers
422
422 views
GATE ECE 2000 | Question 1.19
For the logic circuit shown in the figure is the required input condition $(A, B, C)$ to make the output $(X)=1$ is$1,0,1$$0,0,1$$1,1,1$$0,1,1$
0 0 votes
0 0 answers
475
475 views
GATE ECE 2000 | Question 1.20
In the $8085$ microprocessor, the $\text{RST6}$ instruction transfers the program execution to the following location:$30 \mathrm{~H}$$24 \mathrm{~H}$$48 \mathrm{~H}$$60 ...
1 1 vote
0 0 answers
596
596 views
GATE ECE 2000 | Question 2.7
For the logic circuit shown in, the simplified Boolean expression for the output $Y$ is$\mathrm{A}+\mathrm{B}+\mathrm{C}$$\mathrm{A}$$\mathrm{B}$$\mathrm{C}$
0 0 votes
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481
481 views
GATE ECE 2000 | Question 2.8
For the $4$ bit $\text{DAC}$ shown, the output voltage $v_{0}$ is$10 \mathrm{~V}$$5 \mathrm{~V}$$4 \mathrm{~V}$$8 \mathrm{~V}$
0 0 votes
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485
485 views
GATE ECE 2000 | Question 2.9
A sequential circuit using $D$ Flip-Flop and logic gates is shown in figure, where $X$ and $Y$ are the inputs and $Z$ is the output. The circuit is$S-R$ Flip-Flop with in...
0 0 votes
0 0 answers
428
428 views
GATE ECE 2000 | Question 2.10
The contents of Register $\text{(B)}$ and Accumulator $\text{(A)}$ of $8085$ microprocessor are $49 \mathrm{H}$ and $3 \mathrm{AH}$ respectively. The contents of $\mathrm...
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1.1k
1.1k views
GATE ECE 2000 | Question 2.11
In given figure, the $J$ and $K$ inputs of all the four Flip-Flips are made high. The frequency of the signal at output $Y$ is$0.833 \; \mathrm{kHz}$$1.0 \; \mathrm{kHz}$...
0 0 votes
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348
348 views
GATE ECE 2000 | Question 15
The operating conditions $(O N=1, O F F=0)$ of three pumps $(x, y, z)$ are to be monitored. $x=1$ implies that pump $X$ is on. It is required that the indicator $\text{(L...
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