Im having some trouble with these conversions, specifically numbers out of the -127 to 128 range, and numbers with bases that are not 10. My book is asking for the 2's complement of -19210 and -458 in 8 bits. Here is my work. -19210 19210 = 110000002 (Do I add on another 0 on the left most end here?) flipping the bits, I get 001111112 adding 1 gives 010000002 the book's answer is 000000102 how are they getting this? ________________________________ -458 For this I tried using the shortcut method and got 458 = 001001012 flipping the bits and adding 1, I get 110110112 the book's answer is 101110112 any help? sorry about posting 2 questions in one thread, I just didn't want to clutter the forum with problems that were so similar.