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GATE EC 2021: Subject Revision Quiz 4 (App update required to attempt this test)

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Question 1

With which decoder, it is possible to obtain many code conversion ?

Question 2

An 8-bit DAC produces Vout = 0.05 V for a digital input of Vout for an input of 00101010 is ___________ Volt (Write up to two decimal value)

Question 3

The minimized Boolean function of output Y0

Question 4

Which code is used for identification of cells in K-map?

Question 5

Which of following statement is correct regarding hazards ?

Question 6

Which one of the following is the correct perfect square (in base 10)?

Question 7

The circuit shown below works as

Question 8

Conversion times of 10 bit digital ramp ADC is t1 and a 10 bit Successive- approximation ADC is t2. If both utilize a 500 kHz clock frequency so the ratio of t1 to t2 is ________

(Rounded up to two decimal value)

Question 9

Which of the following instruction falls under “Immediate addressing mode” in 8085 microprocessor?

1) LOAX rP

2) LXI H, 16 bit data

3) Jmp 16 bit address

4) PCHL

Question 10

What is the total memory range and memory map , if for a 16 - bit address bus A15 =1 ,A14=0 and A13-A11 are connected to 3*8 decoder input lines, A15 ,A14 are used to enable the decoder.

Question 11

Given

The minimized expression of the above SOP form will be:

Question 12

We want to get a synchronous counter as,

1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 1, 2, 2, 3, 3, 3, …

The minimum number of JK FF required are _________.

Question 13

The logic circuit used to generate the active low chip select (CE) by an 8085 microprocessor to address a peripheral is shown in figure.

The address range of 6116 R/W memory is

Question 14

The initial binary sequence of the given counter is 000 where Q0 is LSB and Q2 is MSB . Find the binary sequence at Q2 Q1 Q0. After 4 clock pulses

Question 15

The state diagram of a sequence detector is shown below. State S0 is the initial state of the sequence detector. If the output is 1, then

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Aug 31ESE & GATE EC