Number Bases (AQA GCSE Computer Science): Flashcards
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13 cards from this deck
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13 cards from this deck
Base used by hexadecimal
Base used by hexadecimal
Base 16
Digits used in hexadecimal
Digits used in hexadecimal
0-9 and A-F
Decimal value of A in hex
Decimal value of A in hex
10
Decimal value of F in hex
Decimal value of F in hex
15
Base used by binary
Base used by binary
Base 2
Why computers use binary
Why computers use binary
Built from switches that are on (1) or off (0)
Two states of computer switches
Two states of computer switches
On (1) or off (0)
Main advantage of hex over binary for humans
Main advantage of hex over binary for humans
More compact and easier to read
11011100 in binary equals what in hex
11011100 in binary equals what in hex
DC
Number system used for memory addresses
Number system used for memory addresses
Hexadecimal
Number system for web colour codes (e.g. #FF0000)
Number system for web colour codes (e.g. #FF0000)
Hexadecimal
Value represented by second column in hex
Value represented by second column in hex
Sixteens ()
Why programmers prefer hex to binary
Why programmers prefer hex to binary
Readable, memorable, reveals patterns hidden in long binary