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24 - Unsigned Binary Arithmetic

 1. ________________ binary numbers are encoded to include a positive or negative sign.

  256 bit

  sequenced

  unsigned

  signed

 2. Unsigned binary numbers ______ have a positive or negative sign so are useful for positive whole numbers only.

  always

  may have

  do

  do NOT

 3. The advantage of using unsigned binary numbers is that _____________

  they are easier to hard code into the CPU

  they can be used to store very small numbers

  they are easier to follow and understand

  they can be used to store larger numbers than using signed integers

 4. An unsigned binary number has a minimum of _____ and a maximum vakue of 2n-1, where n is the number of bits available

  one

  two

  zero

  three

 5. For unsigned binary of eight bits, the maximum value is ___________

  256

  128

  8

  255

 6. Binary numbers can be added using the same techniques used to add denary numbers.

  TRUE

  FALSE

 7. Binary numbers can NOT be multiplied using the same techniques used to multiply denary numbers.

  FALSE

  TRUE

 8. The only difficulty adding unsigned numbers occurs when you add numbers that are too large. Consider 13+5. What happens?

  The result is a very large number that deletes itself

  The result is a 5 bit number. So the carry bit from adding the two most significant bits represents a results that overflows

  The result is a 10 bit number. An extra two bits are required

  None of the above

 9. Multiplication is different than addition in that multiplication of an n bit number by an m bit number results in an ___________ bit number

  n+m

  m+m

  n-m

  n+0

 10. What is the result (in binary) of multiplying 0011011 by 101?

  This is not possible as the 101 is not the same size as the first number

  10000111

  None of the above

  1110011


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