Chapter 11 - Computer Arithmetic

If two numbers are added, and they are both positive or both negative, then _________ occurs if and only if the result has the opposite sign.

overflow

Positive numbers greater than (2 - 2^-23) x 2^128 are called _________. Question 9 options: A. negative underflow B. positive overflow C. positive underflow D. negative overflow

B

The most common scheme in implementing the integer portion of the ALU is: Question 1 options: A. sign-magnitude representation B. biased representation C. twos complement representation D. ones complement representation

C

`To subtract one number from another, take the twos complement of the subtrahend and add it to the minuend` is the _________ rule.

subtraction

Moving the sign bit to the new leftmost position and filling in with copies of the sign bit is called _________. Question 3 options: A. sign extension B. range extension C. bit extension D. partial extension

A

Positive numbers less than 2^-127 are called ________. Question 8 options: A. positive underflow B. positive overflow C. negative underflow D. negative overflow

A

The _________ is that part of the computer that actually performs arithmetic and logical operations on data.

Arithmetic and Logic Unit (ALU)

Negative numbers greater than 2^-127 are called _________. Question 7 options: A. negative overflow B. negative underflow C. positive overflow D. positive underflow

B

__________ means that the number is too small to be represented and it may be reported as 0. Question 11 options: A. Negative underflow B. Exponent underflow C. Positive underflow D. Significand underflow

B

__________ representation is almost universally used as the processor representation for integers. Question 2 options: A. Biased B. Twos compliment C. Sign-magnitude D. Decimal

B

__________ involves the generation of partial products, one for each digit in the multiplier, which are then summed to produce the final product. Question 5 options: A. Addition B. Subtraction C. Multiplication D. Division

C

__________ is when a positive exponent exceeds the maximum possible exponent value. Question 10 options: A. Significand underflow B. Significand overflow C. Exponent overflow D. Exponent underflow

C

In ________ representation the rule for forming the negation of an integer is to invert the sign bit. Question 4 options: A. ones complement B. twos complement C. biased D. sign-magnitude

D

Negative numbers less than -(2 - 2^-23) x 2^128 are called _________. Question 6 options: A. positive underflow B. positive overflow C. negative underflow D. negative overflow

D

_________ occurs when an arithmetic operation results in an absolute value greater than can be expressed with an exponent of 128.

Overflow