8085 Microprocessor Mcqs

Our Collection of 8085 Microprocessor questions and answers focuses on all areas of 8085 Microprocessor covering a collection of most authoritative and best reference books on 8085 Microprocessor. One should spend 1 hour daily for 2-3 months to learn and assimilate Computer 8085 Microprocessor comprehensively.

1.
In an Intel 8085A, which is the first machine cycle of an instruction?

An op-code fetch cycle

A memory read cycle

A memory write cycle

An I/O read cycle

3.
In 8085 name of the 16 bit registers is

Stack pointer

Program counter

Both A and B

None of these

6.
Which instruction is required to rotate the content of accumulator one bit right along with carry?

RLC

RAL

RRC

RAR

7.
The frequency of the driving network connected between pins 1 and 2 of 8085 microprocessor is

Twice the desired frequency

Equal to the desired frequency

Four times the desired frequency

None of the above

8.
READY signal in 8085 is useful when the CPU communicates with

A slow peripheral device

A fast peripheral device

A DMA chip

A PPI

11.
A sequence of two registers that multiplies the content of DE register pair by two and stores the result in HL register pair (in 8085 assembly language) is

XCHG & DAD B

XTHL & DAD H

PCHL & DAD D

XCHG & DAD H

13.
The 16 bit flag of 8086 microprocessor is responsible to indicate ___________.

The condition of result of ALU operation

The condition of memory

The result of addition

The result of subtraction

error: You are not allowed to do so.....
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