Menu

Question Discussion & Solution

MCQ

Q.

The instruction that subtracts 1 from the contents of the specified register/memory location is

A

INC

B

SUBB

C

SUB

D

DEC

Community Discussion

No discussions yet. Be the first to start!

You must be logged in to participate in the discussion.

Login to Discuss

Similar Questions

MCQ

1.

In general, the destination operand of an instruction can be

A

memory location

B

register

C

immediate data

D

memory location and register

Discussion

MCQ

2.

Which instruction cannot force the 8086 processor out of

A

Interrupt request

B

Interrupt request

C

Both interrupt request and reset

D

Hold

Discussion

MCQ

3.

Which of the following is not a machine controlled instruction?

A

HLT

B

CLC

C

LOCK

D

ESC

Discussion

MCQ

4.

The Carry flag is undefined after performing the operation

A

AAA

B

ADC

C

AAM

D

AAD

Discussion

MCQ

5.

The instruction,

A

2

C

1

D

3

Discussion

More Microprocessor Topics

Microprocessor Basics

84 MCQs

Classification

10 MCQs

Input Output interfacing

20 MCQs

Microcontroller

35 MCQs

8085 Architecture

22 MCQs

8086 Microprocessor

107 MCQs

Multiprocessor Configuration

10 MCQs

Peripheral Interface

10 MCQs

Register Set of 8051

28 MCQs

Serial Communication Unit

12 MCQs

Segmentation

21 MCQs

Paging

14 MCQs

Instruction Set of 8086 8088

40 MCQs

Interrupt and Stack of 8051

20 MCQs

8051 Instruction Set

23 MCQs