CEA 201 - Unit 10 (Multiple choice)
mantissa
Although considered obsolete, the term _________ is sometimes used instead of significand. a. minuend b. mantissa c. base d. subtrahend
sign-magnitude
In ________ representation the rule for forming the negation of an integer is to invert the sign bit. a. ones complement b. twos complement c. biased d. sign-magnitude
sign extension
Moving the sign bit to the new leftmost position and filling in with copies of the sign bit is called _________. a. sign extension b. range extension c. bit extension d. partial extension
negative underflow
Negative numbers greater than 2^-127 are called _________. a. negative overflow b. negative underflow c. positive overflow d. positive underflow
negative overflow
Negative numbers less than -(2 - 2^-23) x 2 128 are called _________. a. positive underflow b. positive overflow c. negative underflow d. negative overflow
positive overflow
Positive numbers greater than (2 - 2^-23) x 2^-128 are called _________. a. negative underflow b. positive overflow c. positive underflow d. negative overflow
positive underflow
Positive numbers less than 2^-127 are called ________. a. positive underflow b. positive overflow c. negative underflow d. negative overflow
twos complement representation
The most common scheme in implementing the integer portion of the ALU is: a. sign-magnitude representation b. biased representation c. twos complement representation d. ones complement representation
Overflow
________ is when the result may be larger than can be held in the word size being used. a.Overflow b. Arithmetic shift c. Underflow d. Partial product
Subnormal numbers
_________ are included in IEEE 754 to handle cases of exponent underflow. a. Subnormal numbers b. Guard bits c. Normal numbers d. Radix points
Extended precision
_________ formats extend a supported basic format by providing additional bits in the exponent and in the significand. a. Arithmetic b. Basic c. Extended precision d. Interchange
Multiplication
__________ involves the generation of partial products, one for each digit in the multiplier, which are then summed to produce the final product. a. Addition b. Subtraction c. Multiplication d. Division
Exponent overflow
__________ is when a positive exponent exceeds the maximum possible exponent value. a. Significand underflow b. Significand overflow c. Exponent overflow d. Exponent underflow
Exponent underflow
__________ means that the number is too small to be represented and it may be reported as 0. a. Negative underflow b. Exponent underflow c. Positive underflow d. Significand underflow
Twos compliment
__________ representation is almost universally used as the processor representation for integers. a. Biased b. Twos compliment c. Sign-magnitude d. Decimal