MICROPROCESSOR QUIZ

Which of the following is type declaration statement in C?

prin = prin * prin

int bar

king = horse + 1

s = s + 1

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YOUR ANSWER : ?

The maximum number of seven segment displays that can be connected to 8279 is

12

16

8

18

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YOUR ANSWER : ?

In an intel 8085A, which is the first machine cycle of an instruction?

A memory write cycle

An I/O read cycle

A memory read cycle

An op-code fetch cycle

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In an 8085 microprocessor based system, the contents of SP are 2000H. POP H instruction will transfer the contents of memory location

2000H and 1FFFH to H and L registers respectively

2001H and 2002H to H and L registers respectively

2001H and 2000H to H and L registers respectively

2000H and 1999H to H and L registers respectively

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YOUR ANSWER : ?

If m is a power of 2, the number of select lines required for an m-input mux is:

log2 (m)

2^m

m

2*m

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The stack pointer register in a microprocessor

counts the number of programs being executing on the microprocessor

counts the number of instructions being executing on the microprocessor

keeps the address of the next instruction to be fetched

holds the address of the top of the stack

TRUE ANSWER : ?
YOUR ANSWER : ?

Identify the programmable DMA controller from the following

8279

8251

8257

8253

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YOUR ANSWER : ?

An 8-bit microprocessor can have ………….. address lines.

8

32

cannot be predicted

16

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YOUR ANSWER : ?

A single instruction to clear the lower nibble of accumulator in 8085 language assembly is

ANI F0H

XRI 0FH

XRI FOH

ANI OFH

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DMA signal/signals in 8085 is/are

HOLD.

All.

HLDA.

READY.

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