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ECE · Q71

Microprocessors And Microcontrollers

Engineering and GATE · ECE · question 71

Q71

A stake machine pushes operands on a stack and evaluates binary operators by a pcs (i.e pop/compute/store) where the top two operands are popped computation is performed and the result is pushed onto stack. Evaluation of an expression (x*y)+ (u*v) by Reverse Polish notation in a stack machine needs

A.
4 push and 3 pcs instruction
Answer
B.
6 push and 1 pcs instruction
C.
4 push and 1 pcs instruction
D.
5 push and 2 pcs instruction

Answer: Option A

Solution

Answer: Option A
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