ITE 221 EXAM 1 QUESTIONS AND CORRECT ANSWERS
|2026/2027 UPDATED |GUARANTEED PASS.
when did IBM introduce the first mass market microcomputer? - Answer -1981
base - Answer -a multiplier that describes the difference between one position and the next in a
numbering system
bit - Answer -represents one digit of a binary number and can have a value of 0 or 1
byte - Answer -a string of 8 bits; smallest unit of data that can be read from or written to a
storage device
file - Answer -a sequence of records on secondary storage; sequential or indexed
data structure - Answer -related groups of primitive data elements organized for some type of
common processing; defined and manipulated in software because the CPU can't manipulate
data structures directly
goals of computer data representation - Answer -compactness, range, accuracy, ease of
manipulation, and standardization
1|Page
,compact representation - Answer -formats use fewer bits to represent a value, but they're
limited in the range of values they can represent
accuracy - Answer -increases with number of data bits used
manipulation - Answer -refers to executing processor instructions
efficient processor circuits perform their functions quickly because of the small number of
components and the short distance electricity must travel
integer - Answer -whole number
unsigned integer - Answer -stores positive integer values as ordinary binary numbers
signed integer - Answer -uses one bit to represent whether the value is positive or negative
twos complement notation - Answer -nonnegative integer values are represented as ordinary
binary values
0 is 1; 1 is 0
2|Page
, mantissa - Answer -follows radix point; part of floating point number that represents significant
digits of that number
multiplied by base raised to the exponent to give the actual value of the number
mantissa - Answer -number of digits determines number of significant (nonzero) digits in the
largest and smallest values that can be represented
exponent - Answer -number of digits determines number of possible bit positions to right or left
of radix point
real number - Answer -number that can contain both whole and fractional components
floating-point notation - Answer -method for representing real numbers
2 parts: mantissa and exponent
character - Answer -a symbol in a written language, including letters, numerals and punctuation
3|Page
|2026/2027 UPDATED |GUARANTEED PASS.
when did IBM introduce the first mass market microcomputer? - Answer -1981
base - Answer -a multiplier that describes the difference between one position and the next in a
numbering system
bit - Answer -represents one digit of a binary number and can have a value of 0 or 1
byte - Answer -a string of 8 bits; smallest unit of data that can be read from or written to a
storage device
file - Answer -a sequence of records on secondary storage; sequential or indexed
data structure - Answer -related groups of primitive data elements organized for some type of
common processing; defined and manipulated in software because the CPU can't manipulate
data structures directly
goals of computer data representation - Answer -compactness, range, accuracy, ease of
manipulation, and standardization
1|Page
,compact representation - Answer -formats use fewer bits to represent a value, but they're
limited in the range of values they can represent
accuracy - Answer -increases with number of data bits used
manipulation - Answer -refers to executing processor instructions
efficient processor circuits perform their functions quickly because of the small number of
components and the short distance electricity must travel
integer - Answer -whole number
unsigned integer - Answer -stores positive integer values as ordinary binary numbers
signed integer - Answer -uses one bit to represent whether the value is positive or negative
twos complement notation - Answer -nonnegative integer values are represented as ordinary
binary values
0 is 1; 1 is 0
2|Page
, mantissa - Answer -follows radix point; part of floating point number that represents significant
digits of that number
multiplied by base raised to the exponent to give the actual value of the number
mantissa - Answer -number of digits determines number of significant (nonzero) digits in the
largest and smallest values that can be represented
exponent - Answer -number of digits determines number of possible bit positions to right or left
of radix point
real number - Answer -number that can contain both whole and fractional components
floating-point notation - Answer -method for representing real numbers
2 parts: mantissa and exponent
character - Answer -a symbol in a written language, including letters, numerals and punctuation
3|Page
