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an integer can be either a signed or unsigned number an unsigned number by definition is positive only a signed number could be either positive or negative letamp;#39;s say if you have one byte which contain eight bits if your number is unsigned you could have anything from zero to 255 if the number is signed with eight bits you have a range between negative 128 to 127 letamp;#39;s go over this example now remember it has to be mentioned whether a number is signed or unsigned letamp;#39;s say this is an unsigned number so the positions are 0 1 2 3 4 5 6 7 so the numbers in red are just the position of each binary bit letamp;#39;s convert this to base 10 so you have 2 to the power 0 plus 24 1 plus to the power 3 plus 3 4 7 this gives you 128 plus 8 plus 2 plus 1 if you add all this up you get 139 in base 10 now letamp;#39;s do an example for a signed number so here you have a signed number in 8-bit remember for a signed number the leftmost bit is the sign bit so zero means positive
