MICROPROCESSOR QUIZ

Which of the following interrupt is both level and edge sensitive?

TRAP

RST 7.5

INTR

RST 5.5

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following ICs is used to interface keyboard and display?

8259

8251

8253

8279

TRUE ANSWER : ?
YOUR ANSWER : ?

The timing difference between a slow memory and fast processor can be resolved if

Processor is capable of waiting

External buffer is used

Either A or B

Neither A nor B

TRUE ANSWER : ?
YOUR ANSWER : ?

How many 16-bit special purpose registers are present in 8085 microprocessor?

6

2

16

8

TRUE ANSWER : ?
YOUR ANSWER : ?

IC 7485 cannot be cascadeD.

True

False

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following conditions is not allowed in an RS latch?

R is negated, S is asserted

R is negated, S is negated

R is asserted, S is asserted

R is asserted, S is negated

TRUE ANSWER : ?
YOUR ANSWER : ?

Circuit A is a 1-bit adder; circuit B is a 1 bit multiplier.[Hint: Construct the truth table for the adder and the multiplier]

None of these

Circuit A has the same number of gates as circuit B

Circuit A has more gates than circuit B

Circuit B has more gates than circuit A

TRUE ANSWER : ?
YOUR ANSWER : ?

The multiplexing of address bus and data buses is used in

never multiplexed.

all the microprocessors.

depends on the internal architecture.

none of these.

TRUE ANSWER : ?
YOUR ANSWER : ?

The 8085 microprocessor enters into bus idle machine cycle whenever

INTR interrupt is recognized

RST 7.5 is recognized

None of these

DAD RP instruction is executed

TRUE ANSWER : ?
YOUR ANSWER : ?

In 8085 microprocessor, in response to RST 7.5 interrupts the execution is transferred to memory location

0000H

003CH

0034H

002CH

TRUE ANSWER : ?
YOUR ANSWER : ?

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