32/2=16r0
16/2=8r0
8/2=4r0
4/2=2r0
2/2r=1r0
1/2=0r1
[tex]32_{10}=100000_2[/tex]
===============
111/2=55r1
55/2=27r1
27/2=13r1
13/2=6r1
6/2=3r0
3/2=1r1
1/2=0r1
[tex]111_{10}=1101111_2[/tex]
===============
39/2=19r1
19/2=9r1
9/2=4r1
4/2=2r0
2/2=1r0
1/2=0r1
[tex]39_{10}=100111_2[/tex]
===============
[tex]2^7+2^6+2^4+2^3+2^1+2^0=128+64+16+8+2+1=219\\\\11011011_2=219_{10}[/tex]
===============
[tex]2^7+2^1+2^0=128+2+1=131\\\\10000011_2=131_{10}[/tex]
