idiots!!!! both of you. Of course you need to !!!! Conversions are simple. Draw your self a nice table. with the powers of 2 in each column from right to left with 2^0 on the far right. eg.
2^0
2^1
2^2
...
in columns.
then write the binary in the next row. Add all of the powers which have a 1 below them.
eg
1001 = 2^0 +2^3 =9
and
0111 = 2^0 + 2^1 + 2^2 =7
