Digital Information: Limitations of Storing Numbers

Question 1

Integer

Answer 1

any number that can be written without a fractional component

Question 2

Computers use the same strategies to store memory of all numbers
true or false

Answer 2

false they use diff srategies for integers and no integers

Question 3

computers represent all data with what

Answer 3

bits

Question 4

On a computer which uses 6 bits to represent integers (with 1 bit to represent the sign), which of these operations result in overflow?

a) 15 + 15
b) 24 + 6
c) 30 + 1
d) 3 + 29

Answer 4

32 bc the highest number the computer can show is 31

Question 5

overflow

Answer 5

when a computer cannot represent a value because it is too high

Question 6

Floating point representation

Answer 6

the strategy does a computer works to represent non integers or integers that are too big for the particular computer to store a number

Question 7

how does floating point representation work

Answer 7

the number shows up as a number multiplied by a base that is raised to an exponent

Question 8

what is the base used in floating point representation and why

Answer 8

ALWAYS 2 bc of bits

Question 9

Roundoff errors

Answer 9

errors where computers that are not precise enough round off numbers (like the ones that go on infinitely 1/3) weirdly so that they make calculations wrong

Question 10

Precision

Answer 10

how precise a number is represented (how mmany decimal places it can be represented by bits in a computer)

Question 11

Puseudocode

Answer 11

codes that you cant actually run but are used for planning programs and for thinking about code independently of specific programming language

Question 12

example of psuedocode

Answer 12

a - b
evaluates the result of b subtracted from a