To Convert any decimal number into binary we can folow these steps

Lets Do it With An Exammple decimal 22 into binary

make a table like this 1 2 4 8 16 32 64 .. .. ..

if u wanna convert 22 look for the number or the number just smaller than this,so what i see that the table does not have 22 so the number next smaller than this is 16,write 1 in front of it

1 2 4 8 16--1 32 64 .. .. ..

ok next step reduce 16 from the number 22,22-16=6 now we get the number 6 repeat the same procedure,we do not have 6 in the table but do have 4, write 1 in front of it

1 2 4 --1 8 16--1 32 64 .. .. .. now the repeat the same deduct 4 out of 6 ,6-4=2 you got 2 which is in the table,write 1 in front of it

1 2 --1 4 --1 8 16--1 32 64 .. .. ..

now when u deduct you 0,2-2=0 so ur binary is complete now to the remaining table numbers put a 0 in front of it

1 --0 2 --1 4 --1 8 --0 16--1 32 64 .. .. .. now just read the number from down to up,10110 here is your binary conversion hope you understand this easily

Thanks and Regards, Anand
SCJP 5.0 310-055 73%, SCWCD 1.4 310-081 78%, IBM DB2 9 Fundamentals 000-730 62%