CSC 3210 Solved

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Computer Organization and Programming
Assignment #1
Objective: Learn some core concepts closely relating to assembly language.
Total 15 points
1. (1 point) Why is assembly language not usually used when writing large application programs?
2. (1 point) Assume that you have three 8-bit storages (registers) named A, B, and C to store binary numbers. Register A contains 10100111 and register B contains 11110110. Compute A+B and store the value in C register. What is the content of register, C after the computation? Show the computation in details with carries.
3. (2 points) Assume that you have 4-bit storage to store the numbers. Calculate the following
operations using two’s complement method. (assuming 4-bit register is used)
-7 – 1 + 4
[Hint: Perform the computation in binary system, then convert it back to decimal]
4. (1 point) What is the binary representation of the following hexadecimal numbers? Show the
conversion in details.
4AE7F98A0
5. (2 points) What is the 16-bit hexadecimal representation of the following signed decimal
integer? Show all the steps of conversion in details.
-61
6. (2 points) What is the decimal representation of each of the following signed binary numbers?
a. (1 point) 11110101
b. (1 point) 10110101
7. (2 point) Evaluate the following Hexadecimal expression. All the numbers are hexadecimal.
Show all the steps of computation and the carries.
AED + CEF – F51
8. (1 point) Is it possible to store -19 in a 4-bit storage. If your answer is YES, then show how to store -19 in 4-bit register. If your Answer is No, Explain why.
9. (1 point) What is the smallest decimal value you can represent, using a 125-bit signed integer?
You can write the number in exponent form.
10. (2 points) What is the Boolean expression for P?
x y z P
0 0 0 0
0 0 1 0
0 1 0 1
0 1 1 0
1 0 0 0
1 0 1 1
1 1 0 0
1 1 1 1
Design a circuit that can produce output P for inputs x, y, and z as expressed in the table above.
Note:
▪ Make sure to justify all answers – show all work.
▪ The Assignment must be submitted electronically through ICollege.
▪ You can do your work in a text editor (Microsoft word, open office, etc.)
▪ Or you can do it in a piece of paper, then scan or take a picture of the paper.
▪ Upload the answers in a pdf file to iCollege in the respective assignment dropbox.
▪ All work must be neat and legible. Illegible work will receive no credit. This includes work where the print contrast or darkness are too faint.
▪ The work that you turn in must be your own — copying is not allowed for any assignments.
▪ Using another student’s work as your own, allowing another student to use your work as their own, is academic misconduct.

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