6. What is the difference between the instructions 15AB and 25AB in the machine language of Appendix C?

7. Here are some instructions in English. Translate each of them into the machine language of Appendix C.

a. LOAD register number 3 with the hexadecimal value 56.

b. ROTATE register number 5 three bits to the right.

c. AND the contents of register A with the contents of register 5 and leave the result in register 0.