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in this video I want to talk about sign binary numbers so up until this point all the binary numbers that we saw were unsigned so they were all uh positive 0 or greater than zero so how can we represent sign binary numbers so there are two different techniques that I will discuss here the first technique is called sign magnitude representation and the second one is the Toolamp;#39;s complement representation so letamp;#39;s go over each one of them one by one and see some examples so for the sign magnitude numbers the first bit is considered the sign bit and the N minus uh one uh remain uh remaining bits or the magnitude bits so letamp;#39;s just take a look at at one example so letamp;#39;s just assume we have an N bit number so this one is representing the sign and the rest represents the the magnitude so the sign bit is the most docHub bit in the number as you can see the most docHub bit if you remember from before is the leftmost bit in the number so so for positive n