Decimal, Binary and Hexadecimal (AQA GCSE Computer Science): Flashcards
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Practise the cards
13 cards from this deck
What is a number base (radix)?
What is a number base (radix)?
How many different symbols we use to write numbers
Decimal system base number
Decimal system base number
Base
Symbols used in decimal system
Symbols used in decimal system
0, 1, 2, 3, 4, 5, 6, 7, 8, 9
What each position in decimal represents
What each position in decimal represents
Power of
Binary system base number
Binary system base number
Base
Symbols used in binary system
Symbols used in binary system
0 and 1
What each position in binary represents
What each position in binary represents
Power of
Hexadecimal system base number
Hexadecimal system base number
Base
Symbols used in hexadecimal system
Symbols used in hexadecimal system
0-9 and A-F
Hex values: A, B, C, D, E, F in decimal
Hex values: A, B, C, D, E, F in decimal
10, 11, 12, 13, 14, 15
Why computers use binary
Why computers use binary
Electrical switches are only ON (1) or OFF (0)
Why programmers use hexadecimal
Why programmers use hexadecimal
Much shorter than binary, easier to read and remember