Binary Review

Decimal notation represents numbers by their coefficients of powers of 10. Binary expresses numbers using coefficients of powers of 2.

32110

= 3x102 + 2x101 + 1x100

= 300 + 20 + 1

= 256 + 64 + 1

= 1 x 28 + 0x27 + 1x26 + 0x25 + 0x24 + 0x23 + 0x22 + 0x21 + 1x20

= 101000001

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