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Hello everybody. In this particular class, we shall look into representation of Negative Number and 2s Complement Arithmetic. So, we had got introduced to number system in the previous class, but in that we did not discuss how to represent negative numbers. So, we shall cover these concepts; how to represent through sign magnitude representation; 1s complement, 2s complement; how to do binary addition and subtraction and how to perform 2s complement arithmetic. So, Sign magnitude representation is very simple ok. So, we have a sign bit specially in a you know, place which is towards the left hand - left most side considered that is MSB Most docHub Bit and rest is the magnitude ok. So, any number the magnitude part will be represented here right and the sign part will be represented here. So, sign if it is 0, we consider it is to be positive; 0 is taken as positive and 1 is taken as negative ok. So, this is the convention. So, in these, if we have got so, 8 bits to represent a