38
Sidetrack: Numeral Systems
(cont)
Binary representation
The
base
is 2; digits 0 and 1
Example: binary number 1011 can be interpreted as
1·2
3
+ 0·2
2
+ 1·2
1
+ 1·2
0
Place values:
…
8
4
2
1
…
2
3
2
2
2
1
2
0
Write number as 1011
2
(= 11
10
)
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