ITM 207 Midterm Exam – Questions With Correct
Solutions
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Practice questions for this set
Learn 1 /7 Study with Learn
Analysis and specification phase
algorithm development phase
implementation phase
maintenance phase
Choose an answer
1 Computer Problem Solving 2 Data and computers
3 Text Compression 4 Lossy Compression
Don't know?
Terms in this set (61)
, are multimedia devices, dealing with a vast array of info
categories
store, present, and help us modify
Data and computers
- Numbers
Texts
Video/audio
All stored as binary digits (Bits)
Reduction in the amount of space needed to store a
Data compression
piece of data or the bandwidth to transmit it
Compression ratio Size of compressed data divided by size of original data
data can be retrieved without any loss of the original
lossless
information
Lossy Compression some information is lost permanently in the process
A continuous representation of data, analogues to
analog data
actual info it represents
A discrete representation, breaking the information up
digital data
into separate elements
a type of data that is represented or displayed in the
binary numeral system; the only category of data that
Binary representation of
can be directly understood and executed by a
data
computer; numerically represented by a combination of
zeros and ones
The sign represents the ordering, and the digits
Signed-magnitude number represent the magnitude of the number
representation Let 0 through 49 represent 0 - 49
Let 50 through 99 represent -50 through -1
formula to compute the representation of a negative
number
Tens complement
Negative(I)= 10k - I, where K is the number of digits
representation
Ex. -3 is negative(3), so using two digits, its
representation is
Negative(3)- 100-3=97 97
ASCII (American Standard used 7 bits to represent each character, allowing 128
Code for Information unique characters
Interchange)
Solutions
Save
Practice questions for this set
Learn 1 /7 Study with Learn
Analysis and specification phase
algorithm development phase
implementation phase
maintenance phase
Choose an answer
1 Computer Problem Solving 2 Data and computers
3 Text Compression 4 Lossy Compression
Don't know?
Terms in this set (61)
, are multimedia devices, dealing with a vast array of info
categories
store, present, and help us modify
Data and computers
- Numbers
Texts
Video/audio
All stored as binary digits (Bits)
Reduction in the amount of space needed to store a
Data compression
piece of data or the bandwidth to transmit it
Compression ratio Size of compressed data divided by size of original data
data can be retrieved without any loss of the original
lossless
information
Lossy Compression some information is lost permanently in the process
A continuous representation of data, analogues to
analog data
actual info it represents
A discrete representation, breaking the information up
digital data
into separate elements
a type of data that is represented or displayed in the
binary numeral system; the only category of data that
Binary representation of
can be directly understood and executed by a
data
computer; numerically represented by a combination of
zeros and ones
The sign represents the ordering, and the digits
Signed-magnitude number represent the magnitude of the number
representation Let 0 through 49 represent 0 - 49
Let 50 through 99 represent -50 through -1
formula to compute the representation of a negative
number
Tens complement
Negative(I)= 10k - I, where K is the number of digits
representation
Ex. -3 is negative(3), so using two digits, its
representation is
Negative(3)- 100-3=97 97
ASCII (American Standard used 7 bits to represent each character, allowing 128
Code for Information unique characters
Interchange)
