CS 101 - Lab03 Worksheet

Name:


1. Use the calculator tool to convert the following numbers. Replace each ???
with your answer.

a. 3501 in decimal = ??? in hexadecimal

b. 9B in hexadecimal = ??? in decimal

c. 1100101011111110000100000001 in binary = ??? in hexadecimal

d. 8421 in hexadecimal = ??? in binary


2. Exercise 15, Page 120

a.

b.


3. Exercise 16, Page 120

a.

b.


4. Exercise 18, Page 121 -- What is the final value in register 0? Explain
also in 1-2 sentences what this program does.




5. Exercise 20, Page 121 -- The simulator will not fully run this example code.
Explain why. If it were to continue, what would be the final answers for a--c?

a.

b.

c.


6. Why does the code loop forever, even though the last instruction is a HALT?
What mistake did the programmer make? Why did the computer allow that to happen?




7. Write your solution to the "z = x + y" program below. You should have about
6-8 instructions. Don't forget to halt the machine.