GATE Electronics: Questions 88 - 92 of 185

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Question number: 88

» Digital Circuits » 8-Bit Microprocessor (8085) » Memory and I-O Interfacing

Appeared in Year: 2005

MCQ▾

Question

What memory address range is NOT represents by chip # 1 and chip # 2 in the figure A0 to A15 in this figure are the address lines.

The combinational circuit which have address lines and chips

The Combinational Circuit Which Have Address Lines and Chips

There are 16 address lines and two 256 Bytes chips using cheap select.

Choices

Choice (4) Response

a.

0100 - 02FF

b.

1500 - 16FF

c.

F900 - FAFF

d.

F800 - F9FF

Question number: 89

» Digital Circuits » 8-Bit Microprocessor (8085) » Programming

Appeared in Year: 2013

MCQ▾

Question

For 8085 microprocessor, the following program is executed.

  1. MVI A05H;
  2. MVI B05H;
  3. PTRADD B;
  4. DCR B;
  5. JNZ PTR;
  6. ADI 03H;
  7. HLT;

At the end of program, accumulator contains

Choices

Choice (4) Response

a.

23H

b.

17H

c.

05H

d.

20H

Question number: 90

» Digital Circuits » Data Converters » Sample and Hold Circuits, ADCs and DACs

Appeared in Year: 2012

MCQ▾

Question

The output Y of a 2-bit comparator is logic 1 whenever the 2-bit input A is greater than the 2-bit input B. The number of combinations for which the output is logic 1, is

Choices

Choice (4) Response

a.

6

b.

4

c.

8

d.

10

Question number: 91

» Digital Circuits » 8-Bit Microprocessor (8085) » Memory and I-O Interfacing

Appeared in Year: 1998

MCQ▾

Question

The instruction used to set the carry flag in a computer can be classified as,

Choices

Choice (4) Response

a.

Logical

b.

Arithmetic

c.

Program control

d.

Data transfer

Question number: 92

» Digital Circuits » Sequential Circuits » Latches and Flip-Flops

Appeared in Year: 2011

MCQ▾

Question

When the output Y in the circuit below is “1”, it implies that data has

The logic circuit consisting D flip-flops & an AND gate

The Logic Circuit Consisting D Flip-Flops & an and Gate

The logic circuit consisting two D flip-flops & an AND gate to find its output

Choices

Choice (4) Response

a.

Changed from “0” to “1”

b.

Changed from “1” to “0”

c.

Changed in either direction

d.

Not changed

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