----------------------------------- Taruen Wed May 31, 2006 9:32 pm Please, Need Help To Convert Decimal To Binary Numbers ----------------------------------- Hey... i'm lookin for some help in creating a small program that converts decimal or numbers... into binary numbers... any help please.? ----------------------------------- Tony Wed May 31, 2006 10:05 pm ----------------------------------- 000 = 0 = 0 001 = 2^0 = 1 010 = 2^1 = 2 011 = 2^1 + 2^0 = 3 100 = 2^2 = 4 101 = 2^2 + 2^0 = 5 111 = 2^2 + 2^1 + 2^0 = 6 notice any patterns? ----------------------------------- Taruen Wed May 31, 2006 10:08 pm ----------------------------------- lol yeah i sorta get it.... but i just need help makin a program... like when i click a command button after entering a number in a text box... i want it to show on a label.. the binary number of itl... how would i program that? ----------------------------------- NikG Thu Jun 01, 2006 12:49 am ----------------------------------- We can't give the code to you, especially considering this is a common assignment in schools from what I remember. Tony gave you a clue. All you gotta do is find a way to go in the opposite direction that Tony showed. ----------------------------------- Brightguy Thu Jun 01, 2006 11:35 am Re: Please, Need Help To Convert Decimal To Binary Numbers ----------------------------------- As a hint, you'll want to use Mod and integer division (the \ operator). Start by finding the least significant bit (the right-most) and then the next least significant, etc. Then get it in a loop so you find one bit each time through the loop. ----------------------------------- NikG Thu Jun 01, 2006 11:37 am ----------------------------------- I believe I've also managed to successfully do this using string manipulation and a for loop (i.e. no Math operators). ----------------------------------- Tony Thu Jun 01, 2006 11:47 am Re: Please, Need Help To Convert Decimal To Binary Numbers ----------------------------------- Start by finding the least significant bit (the right-most) and then the next least significant, etc. Shouldn't it be the other way around, with the left most? 5 mod 2^2 < 5 -- you've got your first bit (of 3) ----------------------------------- Brightguy Thu Jun 01, 2006 4:23 pm Re: Please, Need Help To Convert Decimal To Binary Numbers ----------------------------------- Right now I don't see any advantages starting from the most-significant. But if you wanted to do it like that, why even use Mod? Just directly compare to powers of 2. ----------------------------------- Tony Thu Jun 01, 2006 4:40 pm ----------------------------------- well yeah, pretty much. How are you even expecting on finding the least significant bit? ----------------------------------- Brightguy Thu Jun 01, 2006 6:54 pm Re: Please, Need Help To Convert Decimal To Binary Numbers ----------------------------------- How are you even expecting on finding the least significant bit? That's what Mod is for. Even numbers have a 0 for the lsb, odd numbers have a 1. (I'm guessing you already knew that, though...) I would say there's often a slight advantage doing it from least-to-most significance, since you don't have to start by finding the starting bit. ----------------------------------- Tony Thu Jun 01, 2006 7:05 pm ----------------------------------- well you'd still need to find the starting bit, otherwise you wouldn't know where to stop :wink: you're right, it could be approached from ether direction. Though when starting with lsb, you'd need to bitshift after determining each bit. As oppose to subtracting 2^n from the decimal value. Main difference being the confusion to the student requiring help with conversions :P