Class 5: Representing Data

Question 1

Unsigned integer

Answer 1

= simple binary = B2U

Question 2

If we have w bits, how many integer values can be represent with unsigned int?

Answer 2

0 - 2^w-1

Question 3

Signed integer

Answer 3

= two’s complement = B2T

Question 4

What does the most significant bit for signed integer represent

Answer 4

Represents the sign bit

Question 5

For signed integer, given w bits how many integer values can be represent

Answer 5

-2^(w-1) to 2^(w-1) -1

Question 6

Convert decimal to binary

Answer 6

Divide by 2 and record remainder. When you get to bottom, read the remainder from bottom up

Question 7

Convert from decimal to hexadecimal

Answer 7

Same as binary, just divide by 16 instead