5. Data Representation Flashcards
which set of numbers best describes the following? -2,-1,0,1,2
Integers
Which symbol is given to a set of integers?
Z
What set of numbers does R represent?
Real
Is -8 an integer?
yes, negatives can be integers
What set of numbers can be used for counting?
Natural numbers
To which set does pi belong to?
Irrational numbers
Which set of numbers contains all real world quantities?
Real numbers
Which number base is used by humans for counting?
Base 10 / denary / decimal
Which number base is denoted with 16?
hexadecimal
Hexadecimal equivalent of E?
14
Which numberbase acts as a shorthand representation for binary?
Hexadecimal
What is the decimal equivalent of 0101?
5
What is the binary equivalent of A3
10100011
How many bits are there in kilobyte?
8 x 1000 = 8000
How many GB in a TB?
10^12 - 10^9 = 1000
Describe what is meant by a bit?
fundamental unit of information which can only take 2 values 1, 0.
How many bits are there in a byte?
8 bits
How many nibbles are there in a byte?
2 nibbles
How many different values can be represented with 4 bits?
16
How many bits are there in a mebibit?
2^20
What type of binary represents negative numbers?
signed
What is the range of decimal numbers that can be represented using unsigned binary with 4 bits?
0 to 15
= 0 to 2^4 - 1
How many unique bit patterns can be made with 8 bits?
2^8 = 256
