Converting Between Binary and Decimal (AQA GCSE Computer Science): Flashcards
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Practise the cards
14 cards from this deck
What is the number base of binary?
What is the number base of binary?
Base 2
Which digits are used in binary?
Which digits are used in binary?
0 and 1 only
What is the number base of decimal?
What is the number base of decimal?
Base 10
Which digits are used in decimal?
Which digits are used in decimal?
0 to 9
8-bit binary place values (left to right)
8-bit binary place values (left to right)
128, 64, 32, 16, 8, 4, 2, 1
Pattern of binary place values
Pattern of binary place values
Each doubles the previous; follows
Method: binary to decimal conversion
Method: binary to decimal conversion
Add up all place values where there's a 1
Where to start when aligning binary number?
Where to start when aligning binary number?
Right side (1s column)
Method: decimal to binary conversion
Method: decimal to binary conversion
Subtraction from largest to smallest place value
When to put 1 in decimal to binary?
When to put 1 in decimal to binary?
If place value remaining number, put 1 & subtract
When to put 0 in decimal to binary?
When to put 0 in decimal to binary?
If place value > remaining number
Max decimal for 8-bit binary (GCSE)
Max decimal for 8-bit binary (GCSE)
255
Can you reuse place values in conversions?
Can you reuse place values in conversions?
No - each used only once
How to check conversion accuracy?
How to check conversion accuracy?
Convert back the other way to verify