Question: Convert the following expressions from reverse Polish notation to infix notation. U V W X Y Z + * - * - X Y Z

  1. Convert the following expressions from reverse Polish notation to infix notation.
  1. U V W X Y Z + * - * -
  2. X Y Z + V W * Z - +
  3. X Z + W / X Z - W / -

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4. The memory unit of a computer has 1 M words of 32 bits each. The computer has an instruction format with 4 fields: an opcode field; a mode field to specify 1 of 4 addressing modes; a register address field to specify 1 of 8 registers; and a memory address field. Assume an instruction is 32 bits long. Answer the following:

  1. How large must the mode field be?
  2. How large must the register field be?
  3. How large must the address field be?
  4. How large is the opcode field?

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