Instruction Execution

Step 1: Understand the Expression.
We are given the expression $X%20%3D%20(A%2BB)%20%5Ctimes%20(C%2BD)$ , and we are using two-address instructions. This involves loading operands into registers, performing operations on them, and storing the result in a final variable.

Step 2: Instruction Breakdown.
- (A) MOV R1, A: Load the value of $A$ into register $R1$ .
- (C) MOV R2, C: Load the value of $C$ into register $R2$ .
- (B) MUL R1, R2: Multiply the values in $R1$ and $R2$ , and store the result in $R1$ . This gives $A%20%5Ctimes%20C$ .
- (D) ADD R2, D: Add the value of $D$ to register $R2$ which currently holds the value of $C$ , so it becomes $C%20%2B%20D$ .
- (E) MOV X, R1: Store the result from $R1$ (which contains $A%20%5Ctimes%20C$ ) into the variable $X$ .

Step 3: Execution Order.
The correct sequence of instructions to compute the expression $(A%2BB)%20%5Ctimes%20(C%2BD)$ using two-address instructions is:
1. First, load $A$ into $R1$ (A). 2. Then, load $C$ into $R2$ (C). 3. Perform the multiplication $A%20%5Ctimes%20C$ (B). 4. Add $D$ to $C$ (D). 5. Store the result of multiplication into $X$ (E).

Step 4: Conclusion.
The correct sequence is (2) A, C, B, D. Therefore, the correct answer is option (2).

High-Yield Trend

Chapter Questions
1 MCQs

Official Solution

Instruction Execution

High-Yield Trend

Chapter Questions 1 MCQs

Official Solution

Chapter Questions
1 MCQs