Section _______ Name ____________________________

Computer Organization Assignment 1

Q1. Identify all the base(s) that these numbers could be. Enter one or more: none, 2, 8, 10, 16.

1. 101 ________________
2. 43 _________________
3. 7ae ____________
4. 922 _____________
5. 3e1415 ____________
6. fc13g ______________

416. Convert these (unsigned) binary numbers to decimal

1. 1011 ___________
2. 000111 _________
3. 111000 __________
4. 1010 ____________
5. 110110 __________
6. 100101 __________

Q3. Convert these (unsigned) binary values to hexadecimal

1. 10110 ___________
2. 0001110 _________
3. 1110000 __________
4. 10100 ____________
5. 1101100 __________
6. 1001010 ________

Q4. Convert these octal numbers to decimal

1. 11 =
2. 101 =
3. 1011 =
4. 202 =
5. 670 =
6. 112 =

Q5. Convert these unsigned hexadecimal numbers to decimal

1. 11 =
2. FEFF =
3. C0 =
4. 1A3 =
5. FE =
6. BEEF =

Q6. Convert these decimal numbers to octal AND then to Hex. Label each with the proper subscript

1. 11 =
2. 73 =
3. 86 =
4. 33 =
5. 57 =
6. 512 =

Q7. Write the twos complement of these octal numbers in octal. Hint: First convert the Octal to binary. From that binary, create the 2s complement. Finally, write out the result in octal.

1. 11 =
2. 101 =
3. 1011 =
4. 202 =
5. 670 =
6. 112 =

Q8. Write the twos complement of each hexadecimal number in hexadecimal. Hint: First convert the Hex to binary. From that binary, create the 2s complement. Finally, write out the result in hex.

1. 11 =
2. FEFF =
3. C0 =
4. 1A3 =
5. FE =
6. BEEF =

Q9. Draw a circuit using AND, OR and NOT gates for the following Boolean algebra expressions. Attach sheets as needed:

1. (x+y) * z (ii) b*a+b * (c+) (iii) ( * ) + (e * a)