Question

 In which addressing mode, the operand is given explicitly in the instruction (Example instruction : ADD R4, #3)  
1. Absolute mode
2. Register indirect mode. 
3. Immediate mode  
4. Based Indexed mode.

Answer 1

Correct Answer - Option 3 : Immediate mode  

Concept:

The different ways that a processor can access data are referred to as addressing mode. 

Explanation:

Absolute mode: In this addressing mode, the address of location of the operand is given explicitly as  a part of the instruction. This addressing mode is also known as direct addressing mode. 

Register indirect mode : In this, effective address of operand is the contents of a register. Example :  MOVE A, (R0).

Immediate mode : In this addressing mode, operand is given explicitly in the instruction. Example : ADD R4, #3.

Base indexed mode : The effective address of the operand is generated by adding a constant value to the content of a register.