Question

Difference between two address instruction and three address instruction

Answer 1

https://www.tutorialspoint.com/computer_organization/3_address_instruction_format_example.asp



hope it will be useful 

Answer 2

Three Instruction Address: This system contains three address fields (address of operand1, the address of operand2 and address where result needs to be put).

Ex: Instruction:ADD R1,R2,R3.


Two Instruction Address:  In this format, two addresses and an operation field is there. The result is stored in either of the operand address i.e., either in the address of the first operand or in the address of the second operand. 

Ex: Instruction:ADD R1,R2