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UGC NET CSE | June 2013 | Part 3 | Question: 42

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Computers can have instruction formats with

  1. only two address and three address instructions
  2. only one address and two address instructions
  3. only one address, two address and three address instructions
  4. zero address, one address, two address and three address instructions
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Answer D

Zero address : eg stack

One address accumulator is indirect operand

Two address: most common

Three address: most compact code
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