Question

different ways of representing signed binary numbers

Answer 1

However, in digital circuits there is no provision made to put a plus or even a minus sign to a number, since digital systems operate with binary numbers that are represented in terms of “0’s” and “1’s”. When used together in microelectronics, these “1’s” and “0’s”, called a bit (being a contraction of BInary digiT), fall into several range sizes of numbers which are referred to by common names, such as a byte or a word.

We have also seen previously that an 8-bit binary number (a byte) can have a value ranging from 0 (000000002) to 255 (111111112), that is 28 = 256 different combinations of bits forming a single 8-bit byte. So for example an unsigned binary