Binary Reference & Lesson

binary is base two, meaning is doubles each column move left

128th place, 64th place, 32th place, 16th place, 8th place, 4th place, 2th place, 1th place

so 0010 

is 2

so 0001

is 1

so 0100

is 4

so 0101

is 5

so 0110

is 6

011011

is 27

any binary number can be converted to decimal, decimal is base 10

adding binary numbers:

0101 + 1000 = 1101 = 13

0110 + 0111 = 1 + 4 + 8 = 13 = 1101

evaluate each binary number separately, then evaluate the sum

also vaguely equiv. to on, off

0-15 from binary to decimal:

0000 = 0

0001 = 1

0010 = 2

0011 = 3

0100 = 4

0101 = 5

0110 = 6

0111 = 7

1000 = 8

1001 = 9

1010 = 10

1011 = 11

1100 = 12

1101 = 13

1110 = 14

1111 = 15