5-60. 5-61. 5-62. 5-63. In a 6-bit register, the largest positive value that can be contained is what decimal number? 1. 31 2. 32 3. 63 4. 64 When floating-point operations are performed, the radix point must be aligned properly. The alignment of the radix point takes place at which of the following times? 1.  During  arithmetic  operations  only 2.  After  arithmetic  operations  only 3.  Either  during  or  after  arithmetic operations,  depending  on  the  type  of o p e r a t i on 4.   Before   arithmetic   operations In floating-point operations, what is the fractional portion of the number called? 1.   Characteristic 2.   Mantissa 3.   Radix 4 .    S i gn In a number, the radix point is usually placed in what location? 1.  Between  the  sign  bit  and  the  msb  of the    characteristic 2. Between the sign bit and the lsb of the characteristic 3. Between the sign bit and the lsb of the m a n t i s sa 4.  Between  the  sign  bit  and  the  msb  of the   mantissa IN ANSWERING QUESTION 5-64, REFER TO FIGURE 5-15, FRAME A, ON PAGE 5-21 IN THE TRAMAN. 5-64. For which of the following reasons is zero extended through the most significant 16 bits of the word that contains the characteristic? 1.  The  integer  is  a  positive  number 2.  The  integer  is  a  negative  number 3.  The  mantissa  is  a  positive  number 4.  The  mantissa  is  a  negative  number 5-65. Where the most accuracy is required during floating-point operations, (a) what format is used with two 32-bit words and (b) what is the relationship of the characteristic to the mantissa? 1.  (a)  Single-precision (b)  Characteristic  is  smaller 2.   (a)   Single-precision (b)  Characteristic  is  larger 3.   (a)   Double-precision (b)  Characteristic  is  smaller 4.   (a)   Double-precision (b)  Characteristic  is  larger 5-66. Under which of the following conditions are  the  mantissa’s  results  rounded  up? 1. 2. 3. 4. When the mantissa is less than one- half of one only When the mantissa is greater than one-half of one only When the mantissa is equal to or less than one-half of one When the mantissa is equal to or greater than one-half of one 5-67. What type of floating-point interrupt condition, if any, exists when there is a positive excess? 1. Overflow 2. Underflow 3. Divisor 4.  None,  there  is  no  floating  point interrupt 4 0