1. Show how the following values would be stored by machines with 32-bit words, using little endian and then big endian format. Assume each value starts at address 10₁₆. Draw a diagram of memory for each, placing the appropriate values in the correct (and labeled) memory locations.
   1. 12345678₁₆
   2. ABCDEF12₁₆
   3. 87654321₁₆

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

Show the content of the stack during the conversion process for two of them

3. 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 / -

Show details of conversion

4. Suppose we have the instruction LOAD 600. Given that memory and register R1 contain the values below:

Address	Content
100	600
400	300
500	400
600	600
700	600
800	600

	Content
R1	200

Assuming R1 is implied in the indexed addressing mode, determine the actual value loaded into the accumulator and fill in the table below:

Mode	Value Loaded into AC
Immediate
Direct
Indirect
Indexed

5. 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?