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